Question

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

Explanation:

Step1: Identify coordinates

The coordinate of point $D$ is $- 800$ and the coordinate of point $E$ is $-400$.

Step2: Apply mid - point formula

The formula for the mid - point of a line segment with endpoints $x_1$ and $x_2$ is $\frac{x_1 + x_2}{2}$. Here $x_1=-800$ and $x_2 = - 400$. So, $\frac{-800+( - 400)}{2}=\frac{-800 - 400}{2}=\frac{-1200}{2}$.

Step3: Calculate the result

$\frac{-1200}{2}=-600$.

Answer:

$-600$