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Could I get some Algebra II help? :)?

0 votes

Find the coordinates of Q given that M is the midpoint of PQ.

P(0,0), M(2, -4)

asked Feb 28, 2013 in ALGEBRA 2 by rockstar Apprentice

1 Answer

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Let Q coordinates be (x1, y1)
Midpoint formula is given by (x, y) = ((x1+x2)/2, (y1+y2)/2)
(2, -4) = ((x1+0)/2, (y1+0)/2)
(2, -4) = (x1/2, y1/2)
x1/2 = 2 and y1 = -4
x1 = 2 * 2 =4, y1 = -4 * 2 = -8
Q = (4, -8)

answered Feb 28, 2013 by payton Apprentice

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