SOLUTION: segment ab has endpoint A(-5,-4) and the midpoint M(2,0). What is the y-coordinate of point B?

Question 872749: segment ab has endpoint A(-5,-4) and the midpoint M(2,0). What is the y-coordinate of point B?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
segment ab has endpoint A(-5,-4) and the midpoint M(2,0). What is the y-coordinate of point B?
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Let the coordinate form of B be (x,y).
Solve for x and for y::
(x-5)/2 = 2
(y-4)/2 = 0
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x = 4+5 = 9
y = 0+4 = 4
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(x,y) = (9,4)
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Cheers,
Stan H.
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