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True or False?
A solid line is used when drawing the line for the inequality .
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True or False?
A solid line is used when drawing the line for the inequality .
True.
A solid line is used when drawing the line for the inequality .
Solid lines are used when the inequality includes an equals, ≤ or ≥.
Which side of the line satisfies the inequality ?
The side to the left of the line (including the line itself) satisfies the inequality .
True or False?
The region below the line satisfies the inequality .
False.
The region below the line does not satisfy the inequality .
The region above the line satisfies the inequality.
How could you use the point to determine which side of the line satisfies the inequality ?
To use the point to determine which side of the line satisfies the inequality :
Substitute and into .
If the answer is greater than 12 then the side of the line containing satisfies the inequality.
If the answer is less than 12 then the side of the line which does not contain satisfies the inequality.
How can you identify the inequalities needed to define a region from a graph?
To identify the inequalities needed to define a region from a graph:
Identify the equation of each line.
Substitute the coordinates of a point within the region into each equation.
If the answer is less than the given value in the equation, then it satisfies the inequality (if the line is dotted) or (if the line is solid)
If the answer is greater than the given value in the equation, then it satisfies the inequality (if the line is dotted) or (if the line is solid)