# How do you use the equation y = 6cos(4x-π) + 3 to describe the graph in terms of amplitude, phase shift, vertical shift, and period?

Let it be $y = 6 \cos 4 \left(x - \frac{\pi}{4}\right) + 3$
Amplitude is 6, Phase shift is $\frac{\pi}{4}$, Vertical shift is 3, Period is $\frac{2 \pi}{4} = \frac{\pi}{2}$