document.write( "Question 455145: find the slope of a line perpendicular to the line that passes through 3 9 and 7 15 \n" ); document.write( "

Algebra.Com's Answer #853400 by ikleyn(53614) $\"\"$ $\"About$

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\n" ); document.write( "find the slope of a line perpendicular to the line that passes through (3,9) and (7,15)
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\n" ); document.write( "\n" ); document.write( "        In the post by @mananth, there are many unnecessary calculations and many unnecessary words\r
\n" ); document.write( "\n" ); document.write( "        and reasoning. His final answer -0.67 for the slope of a perpendicular line is incorrect.\r
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\n" ); document.write( "\n" ); document.write( "        I came to make a job in a way as it SHOULD be done.\r
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document.write( "The slope of the line passing through the given points is\r\n" );
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document.write( "    m1 =  =  =  = .\r\n" );
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document.write( "The slope of a perpendicular line is\r\n" );
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document.write( "     = - = .    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "No more calculations are needed. No more words and no more reasoning are needed.\r
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