Question

How do you plot `-2` on the complex plane and write it in polar form?

Answer 1

Place a point at -2 on the real axis.
Polar form: (2, `pi`)

Explanation:

The complex plane consists of an imaginary and a real axis. As one would expect, the imaginary component of a number would be placed on the imaginary axis, and the real would be placed on the real axis.

Since the term -2 has no imaginary component, it is only present on the real axis at -2.

Polar coordinates are written in the form `(r,theta)`. Where `r` is the magnitude of the position vector, and `theta` is its direction in radians or degrees relative to the positive real axis.

To show -2 in polar coordinates, `r=2` and `theta= pi or 180 deg`.

This would be written as `(2,pi)`.