Question

If the midpoint is the point (2,4) and one endpoint is (6,12) find the other endpoint

Answer 1

Let the other endpoint be (h,k)
Therefore, (6 + h)/2 = 2
6 + h = 4
h = -2
(12 + k) / 2 = 4
12 + k = 8
k = -4
The other endpoint is (-2, -4)