document.write( "Question 618861: throught (-1, -4), perpendicualr to 7x-3y=5 \n" ); document.write( "
Algebra.Com's Answer #389164 by scott8148(6628)\"\" \"About 
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swap the x and y coefficients and change one of the signs to get the perpendicular\r
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\n" ); document.write( "\n" ); document.write( "plug in the given point to find the new constant term\r
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\n" ); document.write( "\n" ); document.write( "3x + 7y = ? ___ 3(-1) + 7(-4) = -31\r
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\n" ); document.write( "\n" ); document.write( "3x + 7y = -31
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