document.write( "Question 124921: Are the following lines parallel, perpendicular, or neither? L1 with equation x – 2y = 10 L2 with equation 2x + y = 2 \n" ); document.write( "
Algebra.Com's Answer #91551 by stanbon(75887)\"\" \"About 
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Are the following lines parallel, perpendicular, or neither?
\n" ); document.write( "L1 with equation x – 2y = 10
\n" ); document.write( "L2 with equation 2x + y = 2
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\n" ); document.write( "Put both is slope-intercept form:
\n" ); document.write( "L1: y = (1/2)x-5
\n" ); document.write( "L2: y = -2x + 2
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\n" ); document.write( "The slopes are negative reciprocal of one another so the lines are perpendicular.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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