Linear function (y=mx)

Key term for Edexcel GCSE Mathematics, used in Ratio and Proportion Fundamentals.

Definition

A relationship where the output is directly proportional to the input, forming a straight line graph that passes through the origin.

Exam Context

Linear function (y=mx) appears in Edexcel GCSE Mathematics revision content for Ratio, Proportion and Rates of Change, especially Ratio and Proportion Fundamentals and Ratios and Linear Functions.

Ratio, Proportion and Rates of Change Ratio and Proportion Fundamentals Ratios and Linear Functions

Found in Revision Notes

Ratio, Proportion and Rates of Change

Ratios and Linear Functions

Ratio and Proportion Fundamentals • Ratios and Linear Functions

Revise note

Related Key Terms

Bar model method Constant of proportionality (k)Direct proportion relationship Fraction of a total

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