Determine the Amplitude or Period as Requested $y = \frac { 5 } { 8 } \cos \left( - \frac { 8 \pi } { 7 } x \right)$

question 106

Multiple Choice

Determine the amplitude or period as requested.
Graph Variations of y = cos x
-Period of $y = \frac { 5 } { 8 } \cos \left( - \frac { 8 \pi } { 7 } x \right)$

• A) \(\frac { 7 } { 4 }\)
• B) \(\frac { 16 \pi } { 7 }\)
• C) \(\frac { 5 \pi } { 4 }\)
• D) \(\frac { 4 } { 5 }\)

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