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
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document.write( "(-7,-2) and (1,7)\r
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document.write( "The answer(s) has to be as an integer or simplified fraction \n" );
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Algebra.Com's Answer #257904 by mananth(16946)![]() ![]() You can put this solution on YOUR website! (-7,-2) and (1,7) \n" ); document.write( "... \n" ); document.write( "equation of a line passing through two points \n" ); document.write( "y-y1= m(x-x1) \n" ); document.write( "... \n" ); document.write( "m= 7-(-2)/1-(-7) \n" ); document.write( "m=9/8 \n" ); document.write( "... \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 \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |