What sine function represents an amplitude of 4, a period of pi over 2, no horizontal shift, and a vertical shift of −3?

f(x) = −3 sin 4x + 4
f(x) = 4 sin 4x − 3
f(x) = 4 sin pi over 2x − 3
f(x) = −3 sin pi over 2x + 4

Question

What sine function represents an amplitude of 4, a period of pi over 2, no horizontal shift, and a vertical shift of −3?

 f(x) = −3 sin 4x + 4
 f(x) = 4 sin 4x − 3
 f(x) = 4 sin pi over 2x − 3
 f(x) = −3 sin pi over 2x + 4

anonymous · Answer

I found that one of the question would start with -4 but now I am stuck