Question

Point a is at (-2,4) and point m is at (2.5,3.5). Point m is the midpoint of point A and B. What are the coordinates of point B?

Answer 1

Point B is (7,3)

Explanation:

Answer 2

Find x coordinate
(xa + xb)/2 = xm
(-2 + xb)/2 = 2.5
-2 + xb = 5
xb = 7

Find y coordinate
(ya + yb)/2 = ym
(4 + yb)/2 = 3.5
4 + yb = 7
yb = 3

Coordinates of point B is (7,3)