Question

Determine if the graph is symmetric about the x-axis, the y-axis, or the origin.

r = 4 cos 3θ

Answer 1

I think it's the y-axis only

http://www.wolframalpha.com/input/?i=r+%3D+4+cos+3%CE%B8

Answer 2

@sweetsunray

Answer 3

if you were to reflect the graph over the y axis, it wouldn't match up with itself

Answer 4

however, it is symmetric about the x axis

Answer 5

since you can reflect it over the horizontal x axis and have it match up with itself