Question 97051
Find the coordinates of the missing endpoint given that P is the midpoint of NQ. 
Q (3,9) P(-1,5)
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Let the other end point be (x,y)
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Note: The coordinates of the midpoint are the average of the coordinates of
the endpoints.
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EQUATIONS:
(3+x)/2 = -1
3+x=-2
x=-5
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(9+y)/2 = 5
9+y = 10
y = 1
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Coordinates of the other end point (-5,1)
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Plot the points to see if the answer makes sense
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Cheers,
Stan H.