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)\"\" \"About 
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is x+7y=8 parellel or perpindicular to y=7x+2
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\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
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\n" ); document.write( "y = 7x+2
\n" ); document.write( "slope = 7
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\n" ); document.write( "Product of slopes = (-1/7)7 = -1
\n" ); document.write( "so the lines are perpendicular.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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