SOLUTION: Hey my name is Andrea I need help with linear equations here is my problem : (3, -1) is the midpoint between (-2, -7) and what other point ?

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Question 980758: Hey my name is Andrea I need help with linear equations here is my problem :
(3, -1) is the midpoint between (-2, -7) and what other point ?
Found 2 solutions by Alan3354, macston:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Hey my name is Andrea I need help with linear equations here is my problem :
(3,-1) is the midpoint between (-2,-7) and what other point ?
-------------------
The x distance is 3 -(-2) = 5
The y distance is -1 -(-7) = 6
Add the distances to the midpoint
--> (8,5)

Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
M=midpoint; endpoint 1=(x%5B1%5D,y%5B1%5D); endpoint 2=(x%5B2%5D,y%5B2%5D)
M=%28x%5B1%5D%2Bx%5B2%5D%29%2F2,%28y%5B1%5D%2By%5B2%5D%29%2F2
.
x value of second point:
x%5Bmidpoint%5D=%28x%5B1%5D%2Bx%5B2%5D%29%2F2
3=%28-2%2Bx%5B2%5D%29%2F2
6=-2%2Bx%5B2%5D
8=x%5B2%5D The x value of the second point is 8.
.
y value of second point:
y%5Bmidpoint%5D=%28y%5B1%5D%2By%5B2%5D%29%2F2
-1=%28-7%2By%5B2%5D%29%2F2
-2=-7%2By%5B2%5D
5=y%5B2%5D The y value of the second point is 5.
.
ANSWER: The other endpoint is (8,5).