Question

Which of the following expressions represents the distance between -13 and -4 on a number line

Answer 1

a) |-13 - (-4)|

Explanation:

The formula of a distance between two points (numbers) A and B on the number line:

d = |B - A| = |A - B|

We have A = -13 and B = -4. Substitute:

d = |-13 - (-4)|