Answer:
D
Step-by-step explanation:
(x1 + x2)/2, (y1 + y2)/2
(-6 + 10)/2, (-3 + 9)/2
4/2, 6/2
(2, 3) = Midpoint
(2,3) (10,9)
2+10/2, 3+9/2
12/2, 12/2
6,6