Question

Find the period and the amplitude of the periodic function.
4; 2 *

Answer 1

Choice A

Period = 4

Amplitude=2

Explanation:

From the graph you can see that the graph of the function periodically repeats ecah 4 units. This means that the period of the function is T=4.

The range of the function is [-4,0]. The midpoint of the range is y=-2. When you draw the line =-2, you can see that the graph is 2 units above the line y=-2 and 2 units below the line y=-2. This means that the amplitude is 2.