document.write( "Question 518975: is x+7y=8 parellel or perpindicular to y=7x+2 \n" ); document.write( "
Algebra.Com's Answer #345315 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! is x+7y=8 parellel or perpindicular to y=7x+2 \n" ); document.write( "--- \n" ); document.write( "Solve each for \"y\" so you can see the slopes. \n" ); document.write( "x + 7y = 8 \n" ); document.write( "7y = -x + 8 \n" ); document.write( "y = (-1/7)x + (8/7) \n" ); document.write( "slope = -1/7 \n" ); document.write( "------------------------ \n" ); document.write( "y = 7x+2 \n" ); document.write( "slope = 7 \n" ); document.write( "================ \n" ); document.write( "Product of slopes = (-1/7)7 = -1 \n" ); document.write( "so the lines are perpendicular. \n" ); document.write( "====================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============== \n" ); document.write( " |