document.write( "Question 386989: Determine wheather the graphs of the two equations are perpendicukar? y=6x-9 and 5y=9-x \n" ); document.write( "

Algebra.Com's Answer #273516 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,         
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document.write( "the standard slope-intercept form for an equation of a line: y = mx + b  
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document.write( "where m is the slope and b the y-intercept.  
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document.write( "Determining if lines are perpendicular.  that is: slopes being negative reciprocals.
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document.write( " y= 6x-9  Slope of this line = 6 (line prependicular, would have slope -(1/6)
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document.write( " 5y=9-x
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document.write( "  y = -x/5 + 9/5  Slope of this line is -(1/5) 
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document.write( "Lines are not perpendicular to one another on a graph
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