Question

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

Explanation:

Step1: Recall mid - point formula

For two points $a$ and $b$ on a number line, the mid - point $M=\frac{a + b}{2}$. Here $a=-10$ and $b = - 9$.

Step2: Calculate the mid - point

$M=\frac{-10+( - 9)}{2}=\frac{-10 - 9}{2}=\frac{-19}{2}=-9.5$

Answer:

$-9.5$