document.write( "Question 1013576: Given two lines whose equations are 3x+y-8=0 and -2x+by+9=0 determine the value of b such that the two lines will be perpendicular. \n" ); document.write( "
Algebra.Com's Answer #629851 by stanbon(75887)\"\" \"About 
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Given two lines whose equations are 3x+y-8=0 and -2x+by+9=0 determine the value of b such that the two lines will be perpendicular.
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\n" ); document.write( "3x+y-8=0
\n" ); document.write( "y = -3x + 8
\n" ); document.write( "slope = -3
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\n" ); document.write( "\n" ); document.write( "-2x+by+9=0
\n" ); document.write( "by = 2x - 9
\n" ); document.write( "y = (2/b)x - (9/b)
\n" ); document.write( "slope = 2/b
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\n" ); document.write( "For the lines to be perpendicular (-3)(2/b) = -1
\n" ); document.write( "-b = -6
\n" ); document.write( "b = 6
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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