westion 13: (3 points) Determine the amplitude, midline, period, and an equation involving the sine function for the graph shown below. 10 y 8 6 Er N Amp Perid - 7 6 - 5 - 4 - 3 -2 2 3 4 -2 Midli The p -4 The vel Hints for -8 Th mor -10 . The and ino Enter the exact answers. Amplitude: A = 4 My Answers are wrong. Midline: y = 4 Period: P = Enclose arguments of functions in parentheses. For example, sin (2 * x). Include a multiplication sign between symbols. For example, for 2 7 type in 2 * 7. For the number 7, either choose 7 from the drop-down menu (under a) or type in Pi (with a capital P). y = - 4 + Sin [ 2 * Pi /7 ]