9. What is the equation of the line that passes through the points (5, -1) and (-10, 8)? *
O y = -3/5x - 2
y = -3/5x + 2
O y = 3/5x + 2
O y = 3/5x-2

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.