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The graph of a cosine function shows a reflection over the x-axis, an amplitude of 3, a period of 2, and a phase shift of 0.25 to the right. Which is the equation of the function described?

f(x)=−3cos(πx−1/4)

f(x)=−3cos(πx−π/4)

f(x)=−3cos(πx−1/2)

f(x)=−3cos(πx−π/2)

 Feb 28, 2020
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Note that all of the answers are the sam except for the shift part

 

-pi/4   will shift it appropriately .25 units  to the right

 Feb 28, 2020

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