There are no straight-line segments on a quadratic graph. The coordinates \((x, y ... x\)-axis. Practise reading and plotting quadratic graphs with this quiz. You may need a pen and paper ...

Plot points with coordinates where \(x\) and \(y\) are equal. Three points are sufficient, but more can be plotted. Draw a line through the plotted points. If \(x\) is positive, \(y\) is negative.