document.write( "Question 280265: through (3,-9) and perpendicular to 2x+y=0. How do I put this in standard form? \n" ); document.write( "
Algebra.Com's Answer #203692 by scott8148(6628)\"\" \"About 
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for a perpendicular line
\n" ); document.write( "___ swap the x and y coefficients, and change ONE of the signs\r
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\n" ); document.write( "\n" ); document.write( "use the given point to find the new constant term\r
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\n" ); document.write( "\n" ); document.write( "x - 2y = ? ___ 3 - [2(-9)] = 21\r
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\n" ); document.write( "\n" ); document.write( "new equation is ___ x - 2y = 21
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