Question

use the number line to find the coordinate of the midpoint of $overline{jn}$.

Explanation:

Step1: Identify coordinates

The coordinate of $J$ is $-7$ and the coordinate of $N$ is $3$.

Step2: Apply mid - point formula

The mid - point formula for two points with coordinates $x_1$ and $x_2$ on a number line is $\frac{x_1 + x_2}{2}$. Here $x_1=-7$ and $x_2 = 3$, so $\frac{-7 + 3}{2}$.

Step3: Calculate

$\frac{-7+3}{2}=\frac{-4}{2}=-2$.

Answer:

$-2$