The graph of a cosine function shows a reflection over the x-axis, an amplitude of 5, a period of 6, and a phase shift of 0.25 to the right.
Which is the equation of the function described?
f(x)=-5cos(pix/3-4pi/3)
f(x)=-5cos(pix/3-pi/12)
f(x)=-5cos(pix/3-1/4)
f(x)=-5cos(3pix-1/4)
+36916 cos x
reflected
-cos x
amplitude 5
-5 cos x
period 6
-5 cos ( pix/3)
phase shift .25 r
-5 cos (pi x/3 - pi/12)
