Question

what is the length of $overline{de}$?

Explanation:

Step1: Identify coordinates

The coordinate of point D is 0 and the coordinate of point E is 4.

Step2: Calculate distance

The distance between two points on a number - line is given by the absolute value of the difference of their coordinates. So, \(DE=\vert4 - 0\vert\).
\(DE = 4\)

Answer:

4