CPM Homework Help : CCA2 Problem 8-146

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8-146.

Sketch the graph of each equation below.

$y=3\sin\left(x+\frac{\pi}{2}\right)$
Hint (a):
$\text{locator point} = (- \frac{\pi}{2} , 0)$
More Help 1(a):
$b = 1$ , period $= 2π$
More Help 2(a):
amplitude $= 3$
More Help 3(a):
no vertical shift, midline is $y = 0$ .
Answer (a):

$y = −2 \sin \left(4x\right)$
Hint (b):
$b = 4\text{, period} = \frac{2 \pi}{4} = \frac{\pi}{2}$

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