amplitude = 1, so the distance between the maximum and minimum values is 2 number of waves = 2 (period is 360˚ ÷ 2 = 180˚) graph has not moved up or down maximum turning point when \(y = 1 ...

These are: shape, location and some key points (such as where the graph crosses the axes or turning points). Therefore, aim to recognise the equations and graphs of quadratics, cubics, reciprocals ...