ProLesson 2 of 36 min read

The meaning of gradient and intercept in a straight line

Understand y = mx + c by seeing the gradient as a rate of change and the intercept as the starting value.

Straight-line graphs appear everywhere: a taxi fare, a phone bill, a car travelling at a steady speed. Each one can be described by just two numbers. If you know what those numbers mean, you can read the whole story of the line at a glance and turn a real situation into an equation.

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