document.write( "Question 310887: Two perpendicular lines intersect on the x-axis.An equation of one line is y=3x
\n" ); document.write( "+1.Find an equation of other line \n" ); document.write( "

Algebra.Com's Answer #222386 by Fombitz(32388) $\"\"$ $\"About$

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$\"y=3x%2B1\"$
\n" ); document.write( "Perpendicular lines have slopes that are negative reciprocals.
\n" ); document.write( " $\"m1%2Am2=-1\"$
\n" ); document.write( " $\"3%2Am2=-1\"$
\n" ); document.write( " $\"m2=-1%2F3\"$
\n" ); document.write( "The first line crosses the x-axis ( $\"y=0\"$ ) when $\"x=-1%2F3\"$ .
\n" ); document.write( "Use the point slope form of a line,
\n" ); document.write( " $\"y-yp=m%28x-xp%29\"$
\n" ); document.write( " $\"y-0=-%281%2F3%29%28x-%28-1%2F3%29%29\"$
\n" ); document.write( " $\"highlight_green%28y=+-%281%2F3%29x-1%2F9%29+\"$
\n" ); document.write( " $\"+graph%28+300%2C+300%2C+-3%2C+3%2C+-3%2C+3%2C+-%281%2F3%29x-1%2F9%2C+3x%2B1%29+\"$ \n" ); document.write( "

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