document.write( "Question 751689: Determine whether the lines x-5y=15 and -5x-y+2=0 are parallel, perpendicular, or neither.
\n" ); document.write( "I really need help with this one. Kim \n" ); document.write( "
Algebra.Com's Answer #457367 by tommyt3rd(5050)\"\" \"About 
You can put this solution on YOUR website!
x-5y=15 has \r
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\n" ); document.write( "\n" ); document.write( "\"m%5B1%5D=-B%2FA=-%28-5%29%2F1=5\"\r
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\n" ); document.write( "\n" ); document.write( "and -5x-y+2=0 has \r
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\n" ); document.write( "\n" ); document.write( "\"m%5B2%5D=-%28-1%29%2F%28-5%29=-1%2F5\"\r
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\n" ); document.write( "\n" ); document.write( "and so\r
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\n" ); document.write( "\n" ); document.write( "\"m%5B1%5Dm%5B2%5D=-1\"\r
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\n" ); document.write( "\n" ); document.write( "they are perpendicular\r
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