# How do you find the amplitude, phase shift and period of #Y = 4 Cos 7πX – 7#?

##### 1 Answer

Jun 29, 2016

The amplitude is always the number between the actual function. So in this case, the amplitude, or the number of units the graph moves up and down, is

The phase shift, or the horizontal distance the graph moves from the original parent function, is always the value after

The period of a

Period:

The raw value before