Give the amplitude or period as requested.
-Period of $y = - 5 \cos x$
A) $\pi$
B) $2 \pi$
C) 5
D) $\frac { \pi } { 5 }$

Name: Give the amplitude or period as requested. -Period of $y = - 5 \cos x$ A) $\pi$ B) $2 \pi$ C) 5 D) $\frac { \pi } { 5 }$
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Question

Quizplus · Accepted Answer

The period of a cosine function, $y = a \cos(bx)$, is given by $\frac{2\pi}{|b|}$. For $y = -5\cos(x)$, $b = 1$, so the period is $\frac{2\pi}{1} = 2\pi$.

Give the Amplitude or Period as Requested y=−5cos⁡xy = - 5 \cos xy=−5cosx

Give the Amplitude or Period as Requested $y = - 5 \cos x$