Will give brainliestdetermine if the graph is symmetric about the x-axis, the y-axis, or the origin. r = 8 cos 3θ

The graph is symmetric about the x-axis.

Step-by-step explanation:

The given polar equation is

If the polar equation satisfy by the point (r,-θ), then it is symmetric about the x-axis.

If the polar equation satisfy by the point (-r,-θ), then it is symmetric about the y-axis.

If the polar equation satisfy by the point (-r,θ), then it is symmetric about the origin.

Substitute (r,-θ) for  (r,θ) in the given equation.

Therefore the graph is symmetric about the x-axis.

Substitute (-r,-θ) for  (r,θ) in the given equation.

The graph is not symmetric about y-axis.

Substitute (-r,θ) for  (r,θ) in the given equation.

The graph is not symmetric about the origin.

y=4

Step-by-step explanation:

A line with y=a number is parallel to the x axis.