document.write( "Question 1126400: Lines l1 and l2 pasa through the given points. Determine if l1 and l2 are parallel, perpendicular, or neither. \r
\n" ); document.write( "\n" ); document.write( "l1: (1,3) and (0,0)
\n" ); document.write( "l2: (0,7) and (-2,1)
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Algebra.Com's Answer #742706 by josgarithmetic(39617)\"\" \"About 
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Find slope of each.
\n" ); document.write( "Compare.\r
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\n" ); document.write( "\n" ); document.write( "Equal? Parallel.
\n" ); document.write( "Negative Reciprocals? Perpendicular.
\n" ); document.write( "Neither? Then neither.\r
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\n" ); document.write( "\n" ); document.write( "To be sure, in case equal slopes, check if the two are or are not the same line.
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