How do you plot $-5i$ and find its absolute value?

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Answer 1 · 2017-06-22T14:20:52

The point $(0,-5)$ on the complex plane.
Absolute value $=5$

Let the complex number $z= -5i$

Hence, the real part of $z = 0$ and the imaginary part of $z=-5i$

$:. z= 0-5i$

Hence, $z$ is the point $(0, -5)$ on the complex plane.

By definition the absolute value of $z$ is $sqrt(0^2+(-5)^2)$

$= sqrt25 = 5$

How do you plot -5i-5i and find its absolute value?