What is the equation of this circle in standard form? A.
(x + 5.5)2 + (y + 4)2 = 3.5
B.
(x + 5.5)2 + (y + 4)2 = 12.25
C.
(x − 5.5)2 + (y − 4)2 = 3.5
D.
(x − 5.5)2 + (y − 4)2 = 12.25

Where are the following equations?

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.