Learn how to calculate the equation of a line from a graph, work out the gradient from an equation, and visualise intercepts with this step-by step guide.

In addition to plotting as many as 10 equations at once, the calculator includes an organizer application that saves addresses, appointments and to-do lists.

Revise how to work out the equation of a straight line using coordinates and the gradient, and vice versa. BBC Bitesize Scotland SQA National 5 Maths.