In his math class, Rob observes that students who watch more TV tend to have more anxiety. He decides to make a graph matching each person's weekly TV time with his or her level of test anxiety In this situation which is the INDEPENDENT variable?
A. TV time
B. Math class
C. Each person
D. Anxiety​

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.