Question

What is the distance in the image below?

Answer 1

The distance is:

5 + 3 = 8 units

Answer 2

Since the segment is completely horizontal we need not to use formula for computing the length of a segment in 2D euclidean space.

Instead we can simplify the problem to a single dimension, only considering the x-coordinates of the endpoints of the segment.

The x-coordinates are -5 and 3.

Subtracting and applying absolute value yields the answer,

$\mathrm{abs}(-5-3)=\boxed{8}$.

Hope this helps.