Triangle DEF is reflected over the x-axis. The vertices are: D(0, 0), E(1, 3), F(3, 0). Which set of ordered pairs represents the vertices of D'E'F? *
0 (0,0),(-1, 3), (-3,0)
O (0,0), (1, -3), (3, 0)
0 (0,0), (-1, -3), (-3,0)

That’d be 9 years or something

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.