Answer
The Amplitude is $ 4$
The Period is $\pi$
The Horizontal shift is $\frac {\pi}{2}$ units to the left
See graph below.
Work Step by Step
For $y=a\sin c(x−h) + k$ $y =a \cos c(x−h) + k$,
Amplitude: $|a|$, Period: $\frac{2\pi} {|c|}$,
Horizontal Shift: h
The question asks for a graph, amplitude, period, and horizontal shift of the function.
Given $y = -4 \sin 2(x + \frac{\pi}{2})$
The Amplitude is $|-4| = 4$
The Period is $\frac{2\pi}{|2|} = \pi$
The Horizontal shift is $\frac {\pi}{2}$ units to the left
See graph below.