# Graph f(x)= -3cos(2x+pie) - 3. Find the amplitude, period, phase shift, and vertical shift of the function.

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### 1 Answer

We have `f(x)=-3cos(2x+pi)-3` .

Compare f(x) with `g(x)=|a|cos(bx+c)+d.`

Thus

Amplitude= `|a|=|-3|=3`

Period=`(2pi)/b=(2pi)/2=pi`

Phase shift=`(-c)/b=(-pi)/2`

Vertical shift= d=-3