Find the Midpoint (-1,9) and (-7,1)

$(- 1, 9)$ and $(- 7, 1)$

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 $(x_{2}, y_{2})$ .

$(\frac{- 1 - 7}{2}, \frac{9 + 1}{2})$

Subtract $7$ from $- 1$ .

$(\frac{- 8}{2}, \frac{9 + 1}{2})$

Divide $- 8$ by $2$ .

$(- 4, \frac{9 + 1}{2})$

Add $9$ and $1$ .

$(- 4, \frac{10}{2})$

Divide $10$ by $2$ .

$(- 4, 5)$