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Question 503865: the midpoint of cd is m(-3,-7). if the coordinates of c are (-2,-10), what are the coordinates of d?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! the midpoint of cd is m(-3,-7). if the coordinates of c are (-2,-10), what are the coordinates of d?
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The midpoint coordinates are the average of the end-point coordinates.
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Let the coordinates of d be (x,y)
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Solve:
(x+-2)/2 = -3
(y+-10)/2 = -7
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x-2 = -6
y-10 = -14
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x = = -4
y = -4
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Cheers,
Stan H.
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