Question

Given M is the midpoint of AB. The coordinates of A are (-4,2) and the corrdinates of M are (1,1). Find B.

Answer 1

B = (5,1)

Explanation:

If we mirror A around M, we should expect to find B. The mirror of A is -A. This gives us

M + (-A) = M - A

B = M - A = (1,1) - (-4,2) = (1 - (-4), 1 - 2) = (5,1)