document.write( "Question 377995: find an equation of the line L, where L is perpendicular to y=2x and passes through the point (1,2)? \n" ); document.write( "

Algebra.Com's Answer #268592 by Fombitz(32388) $\"\"$ $\"About$

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Perpendicular lines have slope that are negative reciprocals.
\n" ); document.write( " $\"m%5B1%5D%2Am%5B2%5D=-1\"$
\n" ); document.write( " $\"2%2Am%5B2%5D=-1\"$
\n" ); document.write( " $\"m%5B2%5D=-1%2F2\"$
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\n" ); document.write( " $\"y=-%281%2F2%29x%2Bb\"$
\n" ); document.write( "Use the point to determine $\"b\"$ .
\n" ); document.write( " $\"2=-%281%2F2%29%281%29%2Bb\"$
\n" ); document.write( " $\"b=5%2F2\"$
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\n" ); document.write( " $\"highlight%28y=-%281%2F2%29x%2B5%2F2%29\"$
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