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ASMathsEdexcelPureRevision NotesCoordinate GeometryEquation of a Straight LineModelling with Straight Lines

Modelling with Straight Lines (Edexcel AS Maths): Revision Note

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Edexcel Maths: PureAQA Maths: Pure

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Modelling with Straight Lines

What is modelling with straight lines?

  • Modelling means applying the mathematics to a real-life situation

  • The model is used to find or predict future values

  • Models will often need refining to improve their accuracy

 

Modelling with Straight Lines Notes Diagram 1, A Level & AS Level Pure Maths Revision Notes

 

How do I work with straight line models?

  • Turn the words from the question into mathematical equations

  • In y = mx + c constants “m” and “c” will have a meaning

    • gradient “m” will be the rate of change

    • eg extension in a spring per 1 kg of mass added

    • y-axis intercept “c” will be the initial value

    • eg resting length of a spring

Modelling with Straight Lines Notes Diagram 2, A Level & AS Level Pure Maths Revision Notes

 

  • The skills needed are covered in the other pages of the section Equation of a Straight Line

Worked Example

Modelling with Straight Lines Example Diagram, A Level & AS Level Pure Maths Revision Notes

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    Paul

    Author: Paul

    Expertise: Maths Content Creator (Previous)

    Paul has taught mathematics for 20 years and has been an examiner for Edexcel for over a decade. GCSE, A level, pure, mechanics, statistics, discrete – if it’s in a Maths exam, Paul will know about it. Paul is a passionate fan of clear and colourful notes with fascinating diagrams.