[trigonometric graphs]use the following information to write an equation of the graph described: 7. sin; amp = 2, per = π, vertical shift = down 3.8. cos; amp = 1; per = π/4, phase shift = left π.explain.

7. y = 2 sin (2x) - 3

Step-by-step explanation:

The general form of a sine equation is: y = A sin (Bx - C) + D    where

7. Given:

--> y = 2 sin (2x) - 3

8. Given:

step-by-step explanation:

x^2 -12x + 36 + y^2 = 36

x^2 + y^2 = 12x

r^2 = 12rcos(theta)

r = 12 cos(theta)

is this part of a question or something