Answer:
(8, -1)
Step-by-step explanation:
The midpoint given two points (x1, y1) and (x2, y2) is:
([x1 + x2] / 2, [y1 + y2] / 2)
We have the point (x1, y1) as (-8, -7) and the midpoint as (0, -4). We can plug them in and create two equations, one to find x2, and another for y2.
0= [-8 + x2] / 2
0 = -8 + x2
x2 = 8
-4 = [-7 + y2] / 2
-8 = -7 + y2
y2 = -1
Therefore, point B is (8, -1)
