Mathematics GCSE
linear functions
What linear functions means in Mathematics GCSE, as defined for Pearson Edexcel.
Definition of linear functions
Check what you remember
Read the wording for your board, then hide it and explain linear functions in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
A relationship such as y = 3x, where every matching pair of values lies on a straight line through the origin.
Topics that use linear functions
- Ratio, proportion and rates of change (Pearson Edexcel GCSE)
Related terms
- Acceleration
- Applications of ratio in context
- area and volume units
- Asymptote
- average rate of change
- Average speed
- Chord
- comparing quantities
Using linear functions in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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