Combinations of Transformations (A Level only) (OCR A Level Maths: Pure)

Exam Questions

3 hours37 questions
1
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4 marks

The diagram below shows the graph of y equals straight f left parenthesis x right parenthesis.

The stationary point A left parenthesis negative 2 space comma 8 right parenthesis is marked on the diagram.

q1-2-10-combinations-of-transformations-a-level-only-edexcel-a-level-pure-maths-easy

On separate diagrams, sketch the following graphs

(i)

y equals 2 straight f left parenthesis x right parenthesis plus 1

(ii)
y equals begin inline style 1 half end style straight f left parenthesis x plus 1 right parenthesis

On each diagram, state the coordinates of the image of point A under the given transformation.

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2
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4 marks

Given that y equals straight f left parenthesis x right parenthesis, find equations, in terms of straight f left parenthesis x right parenthesis, for the following transformations:

(i)

Translation by open parentheses table row cell negative 2 end cell row 3 end table close parentheses

(ii)
Horizontal stretch of scale factor 2 followed by a vertical stretch of scale factor 3

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3a
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1 mark

The graph of y equals straight f left parenthesis x right parenthesis where straight f left parenthesis x right parenthesis equals 2 x minus 3 is shown below.

q3a-2-10-combinations-of-transformations-a-level-only-edexcel-a-level-pure-maths-easy

Determine the coordinates of the points marked A and B.

3b
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5 marks
(i)

On the diagram above sketch the graph of y equals vertical line straight f left parenthesis x minus 1 right parenthesis vertical line.

(ii)
Determine the coordinates of the image of the points A spaceand B under the transformation in part (i).

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4
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3 marks

Describe, in order, a sequence of transformations of the graph of y equals straight f left parenthesis x right parenthesis given by the following equations:

(i)

y equals 3 straight f left parenthesis x right parenthesis minus 1

(ii)
y equals begin inline style 1 third end style straight f left parenthesis x minus 1 right parenthesis

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5a
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2 marks

The function straight g left parenthesis x right parenthesis is given as straight g left parenthesis x right parenthesis equals 2 x.

On the same diagram, sketch the graphs of y equals straight g left parenthesis x right parenthesis and y equals straight g to the power of negative 1 end exponent left parenthesis x right parenthesis
Label the coordinates of the points where each graph crosses the coordinate axes.

5b
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4 marks
(i)

Write down an expression for straight g to the power of negative 1 end exponent left parenthesis x right parenthesis in terms of x.

(ii)
Find an expression for straight g to the power of negative 1 end exponent left parenthesis x right parenthesis in terms of straight g left parenthesis x right parenthesis and state the type of transformation this would be.

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6
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4 marks

The equation y equals straight f left parenthesis x right parenthesis, where straight f left parenthesis x right parenthesis equals left parenthesis x minus 2 right parenthesis squared, is shown below..

q6-2-10-cobinations-of-transformations-a-level-only-edexcel-a-level-pure-maths-easy

The points A spaceand B are the points where the graph intersects the coordinate axes.

(i)

Write down the coordinates of A spaceand B.

(ii)
The graph of y equals straight f left parenthesis x right parenthesis is transformed to the graph of y equals negative straight f left parenthesis x right parenthesis minus 4.
Find the coordinates of the images of points A spaceand B under these transformations.

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7a
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2 marks

The diagram shows the graph of y equals straight f left parenthesis t right parenthesis, where straight f left parenthesis t right parenthesis equals cos space t, 0 degree less or equal than straight t less or equal than 360 degree.

q7a-2-10-combinations-of-transformations-a-level-only-edexcel-a-level-pure-maths-easy

(i)

Write down the minimum value of y equals straight f left parenthesis t right parenthesis in the given domain for straight t.

(ii)
 Write down the value of t for which this minimum occurs.

7b
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2 marks
(i)

Write down the minimum value of y equals 3 straight f left parenthesis straight t minus 45 degree right parenthesis in the given domain for t.

(ii)
Write down the value of t for which this minimum occurs.
7c
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2 marks

Find, in terms of straight f left parenthesis t right parenthesis, the combination of transformations that would map the graph of y equals straight f left parenthesis t right parenthesis onto the graph of y equals 3 space cos space t plus 1, 0 degree less or equal than t less or equal than 360 degree.

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8
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3 marks

The function straight f left parenthesis x right parenthesis is to be transformed by a sequence of functions, in the order detailed below:

  1. A reflection in the y-axis.
  2. A vertical stretch of scale factor 4.
  3. A translation by open parentheses table row 0 row cell negative 2 end cell end table close parentheses

Write down an expression for the combined transformation in terms of straight f left parenthesis x right parenthesis.

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9
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4 marks

The diagram below shows the graph of y equals straight g left parenthesis x right parenthesis where

g left parenthesis x right parenthesis equals 1 over x comma space space space space space space space space space space space space space x not equal to 0

q9-2-10-combinations-of-transformations-a-level-only-edexcel-a-level-pure-maths-easy

(i)

Write down the equations of the two asymptotes.

(ii)
Determine the equations of the two asymptotes on the graph of y equals straight g left parenthesis x minus 1 right parenthesis plus 5.

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1
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4 marks

The diagram below shows the graph of y space equals space straight f left parenthesis x right parenthesis.

The stationary points are marked on the diagram.

q1a-2-10-medium-aqa-a-level-maths-pure

On separate diagrams, sketch the graphs with equation

(i)
y equals 2 straight f open parentheses x close parentheses minus 4
(ii)
y equals straight f open parentheses x plus 1 close parentheses plus 3

On each diagram, state the coordinates of the images of the points A and B under the given transformation.

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2
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3 marks

Describe, in order, a sequence of transformations that maps the graph of space y space equals space straight f left parenthesis x right parenthesisonto the following graphs:

(i)
y space equals space 3 straight f left parenthesis x space plus space 2 right parenthesis comma

(ii)
y space equals space straight f left parenthesis long dash x right parenthesis space long dash space 1.

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3
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4 marks

Given that straight f left parenthesis x right parenthesis space equals space 3 x squared minus 2 x find an expression for straight g left parenthesis x right parenthesis, where straight g left parenthesis x right parenthesis is obtained by applying the following sequence of transformations to straight f left parenthesis x right parenthesis.

(i)
Translation by open parentheses table row 2 row 0 end table close parentheses

(ii)
Vertical stretch of scale factor 4

(iii)
Translation by open parentheses table row 0 row cell negative 3 end cell end table close parentheses

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4a
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4 marks
(i)
Sketch the graph of y space equals space straight p left parenthesis x right parenthesis, where straight p left parenthesis x right parenthesis space equals space 3 x minus 4.
(ii)
On the same set of axes, sketch the graph of y space equals space p to the power of negative 1 end exponent left parenthesis x right parenthesis.
Label the coordinates of the points where each graph crosses the coordinate axes.
4b
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4 marks
(i)
Find an expression for p to the power of negative 1 end exponent left parenthesis x right parenthesis.
(ii)
Find an expression for 1 over 9 space left square bracket straight p left parenthesis x right parenthesis space plus space 16 right square bracket.
(iii)
What can you deduce about the sequence of transformations given 1 over 9 left square bracket p left parenthesis x right parenthesis space plus space 16 right square bracket?

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5a
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2 marks

The equation y space equals space f left parenthesis x right parenthesis, where f left parenthesis x right parenthesis space equals space left parenthesis x space long dash space a right parenthesis squared, with a greater than 1, is shown below.

q5a-2-10-medium-aqa-a-level-maths-pure

The points A and B are the points where the graph intercepts the coordinate axes.

Write down, in terms of a, the coordinates of A and B.

5b
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3 marks

Sketch the graph of y space equals space long dash f left parenthesis long dash x right parenthesis, labelling the images of the points A and B and stating their coordinates in terms of a.

5c
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1 mark

Write down the value of a such that the point A is three times as far from the origin as the point B.

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6a
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2 marks

The diagram shows the graph of y space equals space f left parenthesis t right parenthesis, where f left parenthesis t right parenthesis space equals space sin space 2 t comma space space space 0 degree less or equal than space x less or equal than 180 degree.

q7a-2-10-medium-aqa-a-level-maths-pure

(i)
Write down the maximum value of y when y equals space 3 f left parenthesis t right parenthesis.
(ii)
Write down the first value of t for which this maximum occurs.
6b
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2 marks
(i)
Write down the minimum value of y when y space equals space 5 f left parenthesis t space plus space 30 degree right parenthesis.
(ii)
Write down the first value of t for which this minimum occurs.
6c
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2 marks

Find, in terms of f left parenthesis t right parenthesis, the combination of transformations that would map the graph of y space equals space f left parenthesis t right parenthesis onto the graph of y equals 2 plus space sin space t comma space 0 degree less or equal than space x less or equal than 180 degree.

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7
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3 marks

The function f left parenthesis x right parenthesis is to be transformed by a sequence of functions, in the order detailed below:

  1. A horizontal stretch by scale factor 2
  2. A reflection in the x-axis
  3. A translation by open parentheses table row 0 row 2 end table close parentheses

Write down an expression for the combined transformation in terms of f left parenthesis x right parenthesis.

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8a
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2 marks

The diagram below shows the graph of y space equals space g left parenthesis x right parenthesis where

g open parentheses x close parentheses equals fraction numerator 2 x plus 1 over denominator x minus 1 end fraction comma space space space space space space space space x not equal to 1

q8a-2-10-medium-aqa-a-level-maths-pure

Write down the equations of the two asymptotes.

8b
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2 marks

Determine the equations of the two asymptotes on the graph of y space equals space g left parenthesis 2 x right parenthesis minus 3.

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9
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3 marks

The point with coordinates left parenthesis 1 space comma space minus 4 right parenthesis is a stationary point on the graph with equation y equals straight h open parentheses x close parentheses.

Determine the coordinates of the stationary point on the graphs with the following
equations:

(i)
y equals 2 h open parentheses x minus 1 close parentheses comma
(ii)
y equals negative h open parentheses x plus 1 close parentheses plus 2.

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10
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7 marks

The graph of f is shown below. The points A left parenthesis negative 2 comma space 10 right parenthesis and B left parenthesis 4 comma space minus 10 right parenthesis lie on the curve.

q10-2-10-medium-aqa-a-level-maths-pure

Sketch the graph of:

(i)
y space equals space f left parenthesis 2 x minus space 1 right parenthesis comma
(ii)
y space equals f open parentheses 4 minus x close parentheses comma

Clearly indicate the new coordinates of the images of the points A and B.

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11
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4 marks

Describe a sequence of transformations that map the graph of y space equals space In space x onto the graph of y space equals space 5 plus In open parentheses 1 half space x plus 4 close parentheses.

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1
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6 marks

The diagram below shows the graph of y space equals space f left parenthesis x right parenthesis.

The stationary points and intercepts with the x-axis are marked on the diagram.

q1-2-10-hard-aqa-a-level-maths-pure

On separate diagrams, sketch the graphs with equations

(i)
y equals f open parentheses begin inline style 1 half end style x close parentheses plus 2 comma
(ii)
y equals negative f open parentheses x minus 1 close parentheses.

On each diagram, mark the coordinates of the images of the points A comma space B and C under the given transformation.

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2
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4 marks

Describe, in order, a sequence of transformations that maps the graph of y space equals space f left parenthesis x right parenthesis onto the following graphs:

(i)
y equals negative f left parenthesis 3 x minus 1 right parenthesis comma
(ii)
y space equals space 2 f left parenthesis 5 minus space x right parenthesis.

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3
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4 marks

Given that space f left parenthesis x right parenthesis space equals space In left parenthesis 2 x space plus space 1 right parenthesis find an expression for g left parenthesis x right parenthesis, where g left parenthesis x right parenthesis is obtained by applying the following sequence of transformations to f left parenthesis x right parenthesis.

  1. Translation by open parentheses table row cell negative 3 end cell row 0 end table close parentheses,
  2. Horizontal stretch by scale factor 1 half,
  3. Reflection in the x-axis.

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4a
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3 marks

On the same axes sketch the graphs of y space equals space p left parenthesis x right parenthesis and y space equals space p to the power of negative 1 end exponent left parenthesis x right parenthesis, where p left parenthesis x right parenthesis space equals open vertical bar 2 x close vertical bar comma space space x less or equal than 0.

4b
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3 marks

Find an expression for p to the power of negative 1 end exponent space left parenthesis x right parenthesis and state its domain.

4c
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3 marks

Show that  p to the power of negative 1 end exponent left parenthesis x right parenthesis space equals negative 1 half p open parentheses negative 1 half x close parentheses.

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5a
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3 marks

A sketch of the graph with equation y space equals space f left parenthesis x right parenthesis, where space f left parenthesis x right parenthesis space equals space open parentheses x squared minus 4 close parentheses squared is shown below.

q5a

The points A comma space B and C are the points where the graph intercepts the coordinate axes.

Sketch the graph of y space equals space minus 3 f left parenthesis 2 x right parenthesis, labelling the images of the three points A comma space B and C.

5b
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2 marks

Suggest a combination of at least two transformations that will transform the points A comma space B and C such that none of them lie on the coordinate axes.
Give your answer in the form of an expression in terms of f left parenthesis x right parenthesis.

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6a
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2 marks

The diagram shows the graph of y space equals space f left parenthesis t right parenthesis, where f left parenthesis t right parenthesis space equals space cos space t comma space 0 degree space less or equal than space x space less or equal than space 360 degree.

q6a-2-10-hard-aqa-a-level-maths-pure

(i)
Write down the maximum value of y when y equals negative 2 f open parentheses 3 t close parentheses.
(ii)
Write down the value of t for which this maximum occurs.
6b
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2 marks

Find, in terms of f left parenthesis t right parenthesis, the combination of transformations that would map the graph of y space equals space f left parenthesis t right parenthesis onto the graph of y space equals space 2 minus 4 sin space t comma space space 0 degree less or equal than space x less or equal than 180 degree.

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7
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3 marks

The function f left parenthesis x right parenthesis is to be transformed by a sequence of functions, in the order detailed below.

  1. A translation by open parentheses table row 2 row 0 end table close parentheses
  2. A reflection in the y-axis
  3. A vertical stretch by scale factor 2 over 3
  4. A translation by open parentheses table row 0 row 4 end table close parentheses

Write down the combined transformation in terms of f left parenthesis x right parenthesis.

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8a
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5 marks

The diagram below shows the graph of y space equals space g left parenthesis x right parenthesis where

g open parentheses x close parentheses equals fraction numerator 1 over denominator a x end fraction comma space space space space space space space space space space space a comma x not equal to 0

where a is a constant.

q8a-2-10-hard-aqa-a-level-maths-pure

(i)
Write down the equations of the asymptotes on the graph of y space equals space g left parenthesis x right parenthesis.
(ii)
Determine the equations of the asymptotes on the graph of y equals 3 g open parentheses 2 x plus 1 close parentheses.
8b
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3 marks

Determine the domain and range of the series of transformations to y equals f left parenthesis x right parenthesis where f open parentheses x close parentheses equals negative 2 g open parentheses 1 third x plus 3 close parentheses minus 4.

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9
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3 marks

The point with coordinates left parenthesis negative 3 space comma space minus 5 right parenthesis is a stationary point on the graph with equation y equals h open parentheses x close parentheses.

Determine the coordinates of the stationary point on graphs with the following equations:

(i)
y equals h open parentheses 2 x close parentheses minus 5 comma

(ii)
y equals h open parentheses 1 fourth x plus 1 close parentheses comma

(iii)
y equals 2 minus 1 fifth h open parentheses 1 half x close parentheses.

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1
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6 marks

The diagram be10%shows the graph of y space equals space f left parenthesis x right parenthesis.

The stationary points and intercepts with the coordinate axes are marked on the diagram.

q1-2-10-veru-hard-aqa-a-level-maths-pure

On separate diagrams, sketch the graphs with the following equations:

(i)
y equals 2 f open parentheses begin inline style 1 third end style x minus 1 close parentheses comma
(ii)
y equals negative 2 f open parentheses x plus 1 close parentheses plus 1.

On each diagram, mark the coordinates of the images of the points A comma space B and C under the given transformation, giving your coordinates in terms of a.

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2a
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4 marks

Describe, in order, a sequence of transformations that would map the graph of y space equals space f left parenthesis x right parenthesis onto each of the following graphs:

(i)
y equals a f open parentheses x plus b close parentheses plus c     for the case when a space greater than space 0
(ii)
y equals negative f left parenthesis long dash x right parenthesis

2b
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2 marks

How, if at all, would your answer to part (a) (i) change if a space equals space 1 space or space if space a space less than space 0 ?

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3
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4 marks

The function f left parenthesis x right parenthesis space equals space e to the power of 3 x end exponent minus space x minus space 6 is transformed by a sequence of transformations as described below.

  1. Horizontal stretch by scale factor 3,
  2. The modulus of the function is then taken,
  3. Reflection in the y-axis.

Write down the resulting transformation in terms of f left parenthesis x right parenthesis as well as an expression in terms of x.

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4
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4 marks

Show that the graph of y space equals space p left parenthesis x right parenthesis where p left parenthesis x right parenthesis space equals space 2 x plus 1 maps onto the graph of its inverse under the transformations described by  1 half p open parentheses 1 half x close parentheses minus 1.

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5
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4 marks

Prove, that for a constant k comma space k not equal to space 0 comma if f left parenthesis x right parenthesis space equals space k x, then f to the power of negative 1 end exponent space left parenthesis x right parenthesis space equals 1 over k f open parentheses 1 over k x close parentheses.

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6a
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2 marks

A sketch of the graph with equation y space equals space f left parenthesis x right parenthesis, where f left parenthesis x right parenthesis space equals space left parenthesis x squared minus a right parenthesis squared, with a greater than 1 shown below.

q6a-2-10-veru-hard-aqa-a-level-maths-pure


The points A comma space B and C are points where the graph intercepts the coordinate axes.

Write down, in terms of a, the coordinates of A comma space B and C.

6b
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3 marks

Sketch the graph of y space equals space minus 1 half f left parenthesis x long dash 1 right parenthesis, labelling the images of the three points A comma space B and C and stating their coordinates in terms of a.

6c
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2 marks

Suggest, in terms of f left parenthesis x right parenthesis, a combination of at least two transformations, such that the points A comma space B and C transform to new positions but remain lying on their respective axes.

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7a
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4 marks

The diagram shows the graph of y space equals space f left parenthesis t right parenthesis, where f left parenthesis t right parenthesis space equals space cosec space t comma space 0 degree less or equal than space x less or equal than 360 degree.

q7a-2-10-veru-hard-aqa-a-level-maths-pure


The vertical distance between the minimum point, left parenthesis 90 comma space 1 right parenthesis, and the maximum point, left parenthesis 270 space comma space minus 1 right parenthesis is 2. The horizontal distance between them is 180.

Find, in terms of a, the vertical and horizontal distances between the minimum and maximum point on the graph of y equals negative 1 over a f open parentheses a t close parentheses comma space a not equal to 0.

7b
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2 marks

Hence or otherwise show that the distance between the minimum and maximum point on the graph of y space equals space minus 1 over a f left parenthesis a t right parenthesis comma space space space a not equal to 0 comma is

fraction numerator 2 square root of 8101 over denominator a end fraction

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8
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3 marks

The point with coordinates left parenthesis negative a comma space a squared right parenthesis, where a greater than 0, is a stationary point on the graph with equation y space equals space h left parenthesis x right parenthesis.
Determine, in terms of a, the coordinates of the stationary point on the graphs with the following equations:

(i)
y equals 3 h open parentheses begin inline style 1 half end style x close parentheses minus 2 comma

(i)
y equals 3 minus h open parentheses negative x close parentheses comma

(iii)
y equals negative 1 third open square brackets h open parentheses 1 third x minus 1 third close parentheses plus 1 close square brackets.

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