Give the Amplitude or Period as Requested $y = - 3 \cos \frac { 1 } { 2 } x$

question 168

Multiple Choice

Give the amplitude or period as requested.
-Amplitude of $y = - 3 \cos \frac { 1 } { 2 } x$

• A) \(\frac { \pi } { 3 }\)
• B) \(4 \pi\)
• C) 3
• D) \(\frac { 3 \pi } { 2 }\)

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