Question

what is the coordinate of the midpoint of $overline{qr}$? write your answer as an integer or a decimal, or mixed number in simplest form.

Explanation:

Step1: Identify the coordinates

The coordinate of point $Q$ is $- 10$ and the coordinate of point $R$ is $5$.

Step2: Apply mid - point formula

The mid - point formula for two points on a number line with coordinates $x_1$ and $x_2$ is $\frac{x_1 + x_2}{2}$. Here $x_1=-10$ and $x_2 = 5$, so we calculate $\frac{-10 + 5}{2}$.

Step3: Simplify the expression

$\frac{-10+5}{2}=\frac{-5}{2}=-2.5$

Answer:

$-2.5$