Answer:
(9, -1)
Step-by-step explanation:
Midpoint Formula: [tex](\frac{x1+x2}{2}, \frac{y1+y2}{2} )[/tex]
Since we already have 1 endpoint and the midpoint, all we need to do is set the equation up to find the other endpoint:
12.5 = (16 + x)/2
25 = 16 + x
x = 9
-4 = (-7 + y)/2
-8 = -7 + y
y = -1
