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)![]() ![]() ![]() You can put this solution on YOUR website! 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( "----------------------------------- \n" ); document.write( "Each coordinate of the midpoint is the average of the two corresponding \n" ); document.write( "coordinates of the end points. \n" ); document.write( "--- \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 \n" ); document.write( "---------------- \n" ); document.write( "y-coordinate: (y+7)/2 = 2 \n" ); document.write( "y+7 = 4 \n" ); document.write( "y = -3 \n" ); document.write( "------------ \n" ); document.write( "Other endpoint: (5,-3) \n" ); document.write( "---------------------------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |