How do you use transformation to graph the cosine function and determine the amplitude and period of $y=cos(-4x)$ ?

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Answer 1 · 2018-03-26T12:32:52

Amp is 1
Period is $-pi/2$

$Acos(B(x-C)+D$

A is the amplitude
period is $(2pi)/B$
C is the vertical translation
D is the horizontal translation

So amp in this case is 1

Period is $(2pi)/-4=-(pi)/2$

How do you use transformation to graph the cosine function and determine the amplitude and period of y=cos(-4x)y=cos(-4x)?