document.write( "Question 361806: Find the slope of the line that is (a) parallel and (b) perpendicular to the line through the pair of points.\r
\n" ); document.write( "\n" ); document.write( "(-7,-2) and (1,7)\r
\n" ); document.write( "\n" ); document.write( "The answer(s) has to be as an integer or simplified fraction
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Algebra.Com's Answer #257904 by mananth(16946)\"\" \"About 
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(-7,-2) and (1,7)
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\n" ); document.write( "equation of a line passing through two points
\n" ); document.write( "y-y1= m(x-x1)
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\n" ); document.write( "m= 7-(-2)/1-(-7)
\n" ); document.write( "m=9/8
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\n" ); document.write( "y-(-2)=9/8(x-(-7))
\n" ); document.write( "y+2=9/8(x+7)
\n" ); document.write( "8(y+2)=9(x+7)
\n" ); document.write( "8y+16=9x+63
\n" ); document.write( "8y=9x+63-16
\n" ); document.write( "8y=9x+47
\n" ); document.write( "y = 9x/8 +(47/8)
\n" ); document.write( "slope of line parallel to this line = 9/8
\n" ); document.write( "slope of line perpendicular to this line = -8/9
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\n" ); document.write( "m.ananth@hotmail.ca
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