Find the Midpoint (-3,-9) and (-7,-3)

$(- 3, - 9)$ and $(- 7, - 3)$

Use the midpoint formula to find the midpoint of the line segment.

$(\frac{x_{1} + x_{2}}{2}, \frac{y_{1} + y_{2}}{2})$

Substitute in the values for $(x_{1}, y_{1})$ and $(x_{2}, y_{2})$ .

$(\frac{- 3 - 7}{2}, \frac{- 9 - 3}{2})$

Subtract $7$ from $- 3$ .

$(\frac{- 10}{2}, \frac{- 9 - 3}{2})$

Divide $- 10$ by $2$ .

$(- 5, \frac{- 9 - 3}{2})$

Subtract $3$ from $- 9$ .

$(- 5, \frac{- 12}{2})$

Divide $- 12$ by $2$ .

$(- 5, - 6)$