You rotate triangle abc, with vertices a(-3, 1), b(-2, 2), and c(-3, 4), 90° counterclockwise about the origin to form triangle a′b′c′. match each vertex of triangle a′b′c′ to its coordinates.
(2, 2)
(-1, -3)
(1, 3)
(4, 3)
(-2, -2)
(-4, -3)
a′
arrowright
b′
arrowright
c′
arrowright

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.

Ithink the answer is b.

Ap human geography and geometry