document.write( "Question 59474This question is from textbook
\n" ); document.write( ": how would i find the equation for perpendicular lines (2 of them are intersecting), when one has the points (-1,1),(5,3), and the other (3,-2),(1,4)??? \n" ); document.write( "
Algebra.Com's Answer #40753 by checkley71(8403)\"\" \"About 
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(-1,1)(5,3) HAS THE SLOPE OF
\n" ); document.write( "(3-1)/(5+1)=2/6=1/3 NOW SUBSTITUTING THE 1/3 FOR THE SLOPE WE HAVE
\n" ); document.write( "Y=mX+b OR
\n" ); document.write( "Y=1/3X+b NOW REPLACING X & Y WITH ONE SET OF POINTS WE GET
\n" ); document.write( "1=1/3(-1)+b
\n" ); document.write( "1=-1/3+b
\n" ); document.write( "b=1-1/3
\n" ); document.write( "b=2/3 THUS THE EQUATION FOR THIS LINE IS
\n" ); document.write( "Y=1/3X+2/3
\n" ); document.write( "THE SECOND EQUATION HAS A SLOPE OF
\n" ); document.write( "(4+2)/(1-3)=6/-2=-3 THUS WE HAVE
\n" ); document.write( "Y=-3X+b SUBSTITUTING ONE OF THESE POINTS WE GET
\n" ); document.write( "3=-3*3+b
\n" ); document.write( "3=-9+b
\n" ); document.write( "b=3+9
\n" ); document.write( "b=12 THUS THIS LINE HAS THE EQUATION
\n" ); document.write( "Y=-3X+12\r
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