Without Graphing the Function, Determine Its Amplitude or Period as Requested

question 246

Multiple Choice

Without graphing the function, determine its amplitude or period as requested.
- $y = 4 \cos \frac { 1 } { 3 } x \quad$ Find the period.

• A) 4
• B) \(\frac { 4 \pi } { 3 }\)
• C) \(6 \pi\)
• D) \(\frac { \pi } { 3 }\)

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