document.write( "Question 832015: Find an equation of the line that passes through the point (4,2) and is perpendicular to the line 4x+3y=0 \n" ); document.write( "
Algebra.Com's Answer #501805 by erica65404(394)\"\" \"About 
You can put this solution on YOUR website!
The first you need to do, is find the slope of the given line. Solve the equation for y.
\n" ); document.write( "\"4x%2B3y=0\"
\n" ); document.write( "\"3y=-4x\"
\n" ); document.write( "\"y=%28-4%2F3%29x\"\r
\n" ); document.write( "\n" ); document.write( "the slope for this line is \"-4%2F3\"
\n" ); document.write( "Now we need to find a slope that is perpendicular. Take the recriprocal and multiply it by -1.
\n" ); document.write( "\"-4%2F3\"'s reciprocal is \"-3%2F4\" and multiply it by -1 to get a slope of \"3%2F4\".\r
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\n" ); document.write( "\n" ); document.write( "Now we have \"y=%283%2F4%29x%2Bb\" as the beginning of the perpendicular line. We still need to find b.
\n" ); document.write( "They give you the point (4,2), plug in the x and y values into the equation and solve for b.\r
\n" ); document.write( "\n" ); document.write( "\"2=%283%2F4%29%284%2F1%29+%2B+b\"
\n" ); document.write( "\"2+=+3+%2B+b\"
\n" ); document.write( "\"-1=b\"\r
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\n" ); document.write( "\n" ); document.write( "now the final equation is \"y=%283%2F4%29x-1\"\r
\n" ); document.write( "\n" ); document.write( "If you would like more help, email me at ericahigley@yahoo.com.
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