document.write( "Question 239152: How do I find the point of intersection of the pair of straight lines
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document.write( "y=-8x-10
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document.write( "-y=9x+9\r
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document.write( "(x,y)= (?,?) \n" );
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Algebra.Com's Answer #175638 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! y=-8x-10 (red line) \n" ); document.write( "-y=9x+9 \n" ); document.write( "y=9x/-1+9/-1 \n" ); document.write( "y=-9x-9 (green line) \n" ); document.write( "You can solve the 2 equations for x & y or you can graph them & calculate the intersection. \n" ); document.write( "y=-8x-10 \n" ); document.write( "-y=9x+9 add \n" ); document.write( "---------------------- \n" ); document.write( "0=x-1 \n" ); document.write( "x=1 ans. \n" ); document.write( "y=-8*1-10 \n" ); document.write( "y=-8-10 \n" ); document.write( "y=-18 \n" ); document.write( "(x,y)= (1,-18) \n" ); document.write( " |