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

what is the length of $overline{gh}$?
Answer
Explanation:
Step1: Identify coordinates
The coordinate of point $G$ is $42$ and the coordinate of point $H$ is $46$.
Step2: Calculate distance
The length of $\overline{GH}$ is found by subtracting the smaller - coordinate from the larger one. So, $46 - 42=4$.
Answer:
$4$