A straight line can be drawn by joining two points plotted on a grid ... it may be helpful to read the guide on coordinates and graphs from M1 and the guide on Pythagoras' theorem from M2.

The graph of \(y = 2x - 2\) crosses the \(y\)-axis at (0, -2). The constant term in the equation (the + 1 or ‒ 2) shows the point where the graph crosses the \(y\)-axis. This is known as the \(y ...