Question

How do you graph `r= -5`?

Answer 1

Draw the circle with center at r = 0 and radius 5, starting from the polar (`-`5, 0) in the `theta` increasing anticlockwise sense and complete it.

Explanation:

Both r =`-`5 and r = + 5 represent the same circle. It is better to keep r non-negative and read `theta` befittigly.