The midpoint of AB is M(1,-2). If the coordinates of A are (-3, -8), what are the coordinates of B?
1 answer:
9514 1404 393
Answer:
B(5, 4)
Step-by-step 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).
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