Answer
Letter A.
Work Step by Step
From the equation $y = -0.5\sin \pi x$:
$Amplitude$ = $-0.5$
$Period$ = $\frac{2\pi}{\pi} = 2$
Therefore, letter A is the correct answer.
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 4 - Section 4.2 - Amplitude, Reflection, and Period - 4.2 Problem Set - Page 208: 91
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