document.write( "Question 534332: Hi! I need help in the following questions, it's only two. Please help and explain how and why you got what you got. \r
\n" ); document.write( "\n" ); document.write( "Directions: Write an equation for the line that is perpendicular to the given line and that passes through the given point. \r
\n" ); document.write( "\n" ); document.write( "1. (-1,-4); y= 1/6x+1
\n" ); document.write( "2. (-5,5); y= -5x+9 \r
\n" ); document.write( "\n" ); document.write( "Please help, I know how to do it but when they twist it up like this i really don't get it. Please show all of the work and steps involved, and why. Thanks!
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Algebra.Com's Answer #351467 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
(1)
\n" ); document.write( "(-1,-4)
\n" ); document.write( "\"+y+=+%281%2F6%29%2Ax+%2B+1+\"
\n" ); document.write( "This is in the form \"+y+=+m%2Ax+%2B+b+\", where \"+m+\" = slope
\n" ); document.write( "ANY line perpendicular to this line
\n" ); document.write( "will have slope = \"+-+1%2Fm+\"
\n" ); document.write( "Your equation has \"+m+=+1%2F6+\", so any line
\n" ); document.write( "perpendicular to it has slope = \"+-+%281%2F%281%2F6%29%29+=+-6+\"
\n" ); document.write( "----------------
\n" ); document.write( "So far you have \"+y+=+-6x+%2B+b+\". To find \"b\", plug in
\n" ); document.write( "(x,y) = (-1,-4)
\n" ); document.write( "\"+-4+=+-6%2A%28-1%29+%2B+b+\"
\n" ); document.write( "\"+-4+=+6+%2B+b+\"
\n" ); document.write( "\"+b+=+-4+-+6+\"
\n" ); document.write( "\"+b+=+-10+\"
\n" ); document.write( "The equation of the perpendicular line is \"+y+=+-6x+-+10+\"
\n" ); document.write( "-----------------
\n" ); document.write( "(2)
\n" ); document.write( "(-5,5)
\n" ); document.write( "\"+y+=+-5x+%2B+9+\"
\n" ); document.write( "Slope of any perpendicular line = \"+-%281%2F%28-5%29%29+=+1%2F5+\"
\n" ); document.write( "Now plug in (x,y) = (-5,5)
\n" ); document.write( "\"+5+=+%281%2F5%29%2A%28-5%29+%2B+b+\"
\n" ); document.write( "\"+5+=+-1+%2B+b+\"
\n" ); document.write( "\"+b+=+6+\"
\n" ); document.write( "The equation is \"+y+=+%281%2F5%29%2Ax+%2B+6+\"
\n" ); document.write( "Here's a plot of these 2 lines:
\n" ); document.write( "\"+graph%28+400%2C+400%2C+-12%2C+12%2C+-12%2C+12%2C+-5x+%2B+9%2C+%281%2F5%29%2Ax+%2B+6%29+\"
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