Question 266680:  Find the coordinates of the other endpoint of the segment, given its midpoint and one endpoint. 
Midpoint (8,11), endpoint (-1,13) 
The other endpoint is...... (must have ordered pair)''. 
 Answer by drk(1908)      (Show Source): 
You can  put this solution on YOUR website! Lets look at it this way 
endpoint (-1, 13) 
midpoint (8, 11) 
endpoint (x, y) 
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looking at the x's, we go from -1 to 8. This is a jump of 9, so our next x = 17 
looking at the y's, we go from 13 to 11. This is a jump of 2, so our next x = 9 
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Our endpoint is (17,9) 
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