document.write( "Question 1009731: Write the standard form of the equation of the line described. Please show work.\r
\n" ); document.write( "\n" ); document.write( "7) through: (3, 4), perpendicular to y = - (3)/(7) x + 4
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Algebra.Com's Answer #625180 by josmiceli(19441)\"\" \"About 
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The slope of \"+y+=+%28+-3%2F7+%29%2Ax+%2B+4+\"
\n" ); document.write( "is \"+m+=+-3%2F7+\"
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\n" ); document.write( "Any line perpendicular to this line has
\n" ); document.write( "slope
\n" ); document.write( "\"+m%5B1%5D+=+-1%2Fm+\"
\n" ); document.write( "\"+m%5B1%5D+=+-%28-7%2F3%29+\"
\n" ); document.write( "\"+m%5B1%5D+=+7%2F3+\"
\n" ); document.write( "-------------------
\n" ); document.write( "Given the point ( 3,4 )
\n" ); document.write( "Use the general point-slope formula
\n" ); document.write( "\"+%28+y+-+4+%29+%2F+%28+x+-+3+%29+=+7%2F3+\"
\n" ); document.write( "\"+y+-+4+=+%287%2F3%29%2A%28+x+-+3+%29+\"
\n" ); document.write( "\"+3y+-+12+=+7x+-+21+\"
\n" ); document.write( "\"+3y+=+7x+-+9+\"
\n" ); document.write( "\"+7x+-+3y+=+9+\"
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\n" ); document.write( "check:
\n" ); document.write( "does it go through ( 3,4 ) ?
\n" ); document.write( "\"+7x+-+3y+=+9+\"
\n" ); document.write( "\"+7%2A3+-+3%2A4+=+9+\"
\n" ); document.write( "\"+21+-+12+=+9+\"
\n" ); document.write( "\"+21+=+21+\"
\n" ); document.write( "OK
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