Learn how to write a linear equation from a word problem in six easy steps. Find out how to identify the variables, slope, and y-intercept, and check your answer.

A linear relationship (or linear association) is a statistical term used to describe the directly proportional relationship between a variable and a constant.

Revise how to recognise and determine the equation of a quadratic function from its graph. BBC Bitesize Scotland revision for SQA National 5 Maths.