document.write( "Question 533168: A line that passes through (8,4) and is perpendicular to 2x-y=-7 \n" ); document.write( "
Algebra.Com's Answer #350987 by lwsshak3(11628)\"\" \"About 
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A line that passes through (8,4) and is perpendicular to 2x-y=-7
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\n" ); document.write( "Standard form of equation for a straight line: y=mx+b, m=slope, b=y-intercept
\n" ); document.write( "2x-y=-7
\n" ); document.write( "y=2x+7
\n" ); document.write( "slope=2
\n" ); document.write( "For line passing thru (8,4) and perpendicular to first equation
\n" ); document.write( "slope=-1/2 (negative reciprocal)
\n" ); document.write( "equation: y=-x/2+b
\n" ); document.write( "using given point (8,4) to solve for b
\n" ); document.write( "4=-8/2+b
\n" ); document.write( "b=8
\n" ); document.write( "Equation of perpendicular line:
\n" ); document.write( " y=-x/2+8
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