Which of the following quadratic graphs has only one zero? y=-232 - 4x + 8
y= - 16
Oy= 22 + 8x + 16
y = 2x² – 8x
(Please help)

Dis the correct  answer

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.