document.write( "Question 173510This question is from textbook Essentials Algebra
\n" ); document.write( ": If the slope of a line is m= 4, then the slope of every line perpendicular to it is ________ . \n" ); document.write( "
Algebra.Com's Answer #128368 by KnightOwlTutor(293)\"\" \"About 
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The negative inverse of the slope m=-1/4 \n" ); document.write( "
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