A quadrilateral with vertices at A(4.-4), B(4, -16), C(12, -16), and D(12,-4) has been dilated with a center at the origin. The image of D, point D', has coordinates (36, -12). What is the scale factor of the dilation? 1/9 1/3 3 9​

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.