points q, r, and s lie in a plane. if the distance between q and r is 18 and the distance between r and s is 11, which of the following could be the distance between q and s? i. 7 ii. 28 iii. 29

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.