The vertical axis is a line which goes up and down. The vertical axis is on the left hand side of the graph and moves upwards from the horizontal axis. Complete this interactive activity to ...

If an equation can be rearranged into the form \(y = mx + c\), then its graph will be a straight line. In the above: \(x + y = 3\) can be rearranged as \(y = 3 - x\) (which can be re-written as ...