# How do you find the midpoint of A(-1,-9), B(11,-5)?

$\left(5 , - 7\right)$
The midpoint of a segment with endpoints (x_1, y_1) & (x_2, y_2) has the coordinates: $\left[\frac{{x}_{1} + {x}_{2}}{2} , \frac{{y}_{1} + {y}_{2}}{2}\right]$
midpoint of AB is: $\left[\frac{- 1 + 11}{2} , \frac{- 9 - 5}{2}\right] = \left(5 , - 7\right)$