document.write( "Question 281764: Find an equation of the line that contains the given point and is perpendicular to the given line. \r
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document.write( "(-7,-8), x+5y=15\r
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document.write( "Thank you. \n" );
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Algebra.Com's Answer #204697 by subudear(62) ![]() You can put this solution on YOUR website! To find the line perpendicular to any line, just reverse the coefficients of x and y with signs.\r \n" ); document.write( "\n" ); document.write( "so line perpendicular to x + 5y = 15 will be 5x - y = k, we need ot find this k.\r \n" ); document.write( "\n" ); document.write( "As this line passes through (-7,-8) so replace values for x and y in the equation\r \n" ); document.write( "\n" ); document.write( "5x - y = k \n" ); document.write( "5(-7) - (-8) = k\r \n" ); document.write( "\n" ); document.write( "k = -27\r \n" ); document.write( "\n" ); document.write( "so equation of line will be 5x -y = -27 \n" ); document.write( " |