Question 495013
X has coordinates (a,3a), and Y has coordinates (-5a,0). What are the coordinates of the midpoint of XY?
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midpoint: 
x-coordinate = (a-5a)/2 = -2a
y-coordinate = (3a+0)/2 = (3/2)a
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midpoint = (-2a, (3/2)a)
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Cheers,
Stan H.
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