document.write( "Question 809443: what is the equation y=-.5x-4 in slope-intercept form for a line perpendicular to the graph of the equation that passes through the x-intercept of that line? \n" ); document.write( "
Algebra.Com's Answer #487714 by TimothyLamb(4379)\"\" \"About 
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L1:
\n" ); document.write( "y = -.5x - 4
\n" ); document.write( "same as:
\n" ); document.write( "y = (-1/2)x - 4
\n" ); document.write( "slope (m) = (-1/2)
\n" ); document.write( "x-intercept (a) = 4(-2) = (-8, 0)
\n" ); document.write( "---
\n" ); document.write( "L2:
\n" ); document.write( "perpendicular lines have negative reciprocal slopes:
\n" ); document.write( "mp = 2
\n" ); document.write( "use the point-slope form with x-intercept of L1:
\n" ); document.write( "y - y1 = mp(x - x1)
\n" ); document.write( "y = 2(x + 8)
\n" ); document.write( "Answer:
\n" ); document.write( "eqn. of perp. line in slope-intercept form:
\n" ); document.write( "y = 2x + 16
\n" ); document.write( "---
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