Write an Equation for the Function That Is Described by the Given

Write an equation for the function that is described by the given characteristics. ​
A cosine curve with a period of π,an amplitude of 6,a left phase shift of π,and a vertical translation down $\frac { 4 } { 3 }$ units.
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A) $y = 6 \cos ( 2 x + \pi ) - \frac { 4 } { 3 }$
B) $y = 6 \cos ( 2 x + 2 \pi ) - \frac { 4 } { 3 }$
C) $y = 6 \cos ( 2 x + 2 \pi ) + \frac { 4 } { 3 }$
D) $y = 6 \cos ( x + 2 \pi ) - \frac { 4 } { 3 }$
E) $y = 6 \cos ( x + \pi ) - \frac { 4 } { 3 }$

Correct Answer:

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