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)
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