Answer
$\left( -1,-3 \right)$
Work Step by Step
Using $\left( \dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2} \right)$ or the Midpoint Formula, the midpoint of the segment joining $\left(
-8,-5
\right) \text{ and } \left(
6,-1
\right),$ is
\begin{array}{l}\require{cancel}
\left( \dfrac{-8+6}{2},\dfrac{-5+(-1)}{2} \right)
\\\\=
\left( \dfrac{-2}{2},\dfrac{-6}{2} \right)
\\\\=
\left( -1,-3 \right)
.\end{array}