document.write( "Question 695885: are3 the lines 3x-6=18 and y=-2x+7 parallel, perpendicular, or oblique (neither)?
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Algebra.Com's Answer #428670 by ReadingBoosters(3246)\"\" \"About 
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solve 3x-6=18 for x
\n" ); document.write( "3x = 18 + 6
\n" ); document.write( "3x = 24
\n" ); document.write( "x = 8, which is a vertical line through x = 8
\n" ); document.write( "Vertical lines have an undefined slope.
\n" ); document.write( "For the other line to be parallel, it too must have an undefined slope.
\n" ); document.write( "For the other line to be perpendicular it must have a slope of 0
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\n" ); document.write( "y=-2x+7 has a slope of -2
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\n" ); document.write( "Therefore, the two lines are oblique.\r
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