Question 461214
given endpoint (-6,2) and the midpoint (5,2)
 find the other endpoint
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Fact: The mid-point coordinates are the average
of the corresponding end-point coordinates.
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Solve:
Let the end-point be (x,y)
(x+-6)/2 = 5
(y+2)/2 = 2
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x-6 = 10
y+2 = 4
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x = 16
y = 2
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Cheers,
Stan H.