Question

The midpoint of AB is M(1,-2). If the coordinates of A are (-3, -8), what are the coordinates of B?​

Answer 1

9514 1404 393

Answer:

B(5, 4)

Explanation:

The midpoint formula is ...

M = (A +B)/2

Solving for B gives ...

B = 2M -A

B = 2(1, -2) -(-3, -8) = (2+3, -4+8) = (5, 4)

The coordinates of B are (5, 4).