Figure 1a. Graph for y = 3x + 4. Figure 1b. Graph for y = 2x 2 - 3x + 4. Figure 1c. Graph for y = 0.6x 3 + 2x 2 - 3x + 4. In school I also had the x- and y-axes represent something, such as age ...

A linear equation is drawn as a straight line on a set of axes. To draw the graph we need coordinates. We generate these coordinates by substituting values into the linear equation.

Learn and revise how to plot coordinates and create straight line graphs to show the relationship between two variables with GCSE Bitesize Edexcel Maths.