#### Answer

$\left( 0,-\dfrac{1}{2} \right)$

#### 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 $\left(
-1,2
\right) \text{ and } \left(
1,-3
\right),$ is
\begin{array}{l}\require{cancel}
\left( \dfrac{-1+1}{2},\dfrac{2+(-3)}{2} \right)
\\\\=
\left( \dfrac{0}{2},\dfrac{-1}{2} \right)
\\\\=
\left( 0,-\dfrac{1}{2} \right)
.\end{array}