Question 417108
M is the midpoint of B. The coordinates of A are (-2,3) and the coordinates of M are (1,0). 
Find the coordinates of B.
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Let the coordinate of B be (x,y)
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(x+-2)/2 = 1
(y+3)/2 = 0
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x-2 = 2
y+3  =0
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x = 4
y = -3
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Cheers,
Stan H.
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