Answer
$(5, 2\pi) (-5, 2\pi)$
See graph below.
Work Step by Step
Given $(-5, 0)$
$0$ is on the "x-axis" on the right side but since r = -5, then the point will be plotted on the "x-axis" for the left side.
See the graph below.
For different polar coordinates, it can be accomplished by the following:
$(−r,θ+π)=(5, 0 +π)=(5, 2\pi)$
or
$(r,θ+2π)=(-5, 0 + 2π)=(-5, 2\pi)$
