Question

The midpoint of overline AB is M(-4, -3). If the coordinates of A are (-1, -2) what are the coordinates of B?

Answer 1

(-2.5,-2.5)

Explanation:

(-4+-1)÷2=-2.5

(-3+-2)÷2=-2.5

Answer 2

(-7, -4)

Explanation:

Equating A and B to the Midpoint (M) :

• (-4, -3) = (-1 + x / 2, -2 + y / 2)

Equations formed :

1. -1 + x / 2 = -4

• -1 + x = -8
• x = -7

2. -2 + y / 2 = -3

• -2 + y = -6
• y = -4

Coordinates of B :

• (x, y)
• (-7, -4)