Question

The midpoint of AB is M (4,1). If the coordinates of A are (2,8), what are the coordinates of B?

Answer 1

B = (6, -6)

Explanation:

(2+x)/2=4

2+x =2*4

x = 8 - 2

x = 6

(8+y)/2 = 1

8+y = 1*2

y = 2 - 8

y = - 6