document.write( "Question 178218: If M(-2,2) is the midpoint of segment PQ and the coordinates of P are (-9,7), find the coordinates of Q? \n" ); document.write( "
Algebra.Com's Answer #133177 by stanbon(75887)\"\" \"About 
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If M(-2,2) is the midpoint of segment PQ and the coordinates of P are (-9,7), find the coordinates of Q?
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\n" ); document.write( "Each coordinate of the midpoint is the average of the two corresponding
\n" ); document.write( "coordinates of the end points.
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\n" ); document.write( "Let the missing endpoint be (x,y)
\n" ); document.write( "x-coordinate: (x+(-9)/2 = -2
\n" ); document.write( "x-9 = -4
\n" ); document.write( "x = 5
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\n" ); document.write( "y-coordinate: (y+7)/2 = 2
\n" ); document.write( "y+7 = 4
\n" ); document.write( "y = -3
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\n" ); document.write( "Other endpoint: (5,-3)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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