On the curve, the highest point has a y coordinate of y = 6 The lowest point on the curve has a y coordinate of y = -4
Subtracting the y values gets us: 6 - (-4) = 6 + 4 = 10 Cut that result in half: 10/2 = 5 The amplitude is 5. This is the vertical distance from the midline (y = 1) to either the highest point or the lowest point.
