Question

If one endpoint is (2,5) and the midpoint is (5,1) what are the coordinates of the other endpoint ???

Answer 1

(8, -3)

Explanation:

The coordinates of the midpoint are the average of the endpoints.

5 = (x + 2) / 2

10 = x + 2

x = 8

1 = (y + 5) / 2

2 = y + 5

y = -3