For the function f (a) = -2 sin (ac - ST ), determine its amplitude and period, and then graph it for two periods. Enter the exact answers. For the number 7, either choose i from the bar at the top or type in Pi (with a capital P). Amplitude: A = Number Period: P = Using your answers for the amplitude and period, select the correct graph of the function f (x) = -2sin x - 2 6 Ly 4 2 X O 3 1 0 3 Na -2