SOLUTION: Find B if A is (-3,-1) and M, the midpoint of AB is (6,-2)

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Question 966951: Find B if A is (-3,-1) and M, the midpoint of AB is (6,-2)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
THe midpoint is the average of x and y values.
6=%28-3%2Bx%5BB%5D%29%2F2
-3%2Bx%5BB%5D=12
x%5BB%5D=15
.
.
-2=%28-1%2By%5BB%5D%29%2F2
-1%2By%5BB%5D=-4
y%5BB%5D=-3
.
.
(15,-3)
.
.
.