document.write( "Question 1069480: What is the slope of a line perpendicular to the line containing the points (4,-7) and (-5,-1)? Express your answer as a common fraction. \n" ); document.write( "
Algebra.Com's Answer #684675 by Alan3354(69443)\"\" \"About 
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What is the slope of a line perpendicular to the line containing the points (4,-7) and (-5,-1)? Express your answer as a common fraction.
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\n" ); document.write( "Find the slope of the line thru the points, m.
\n" ); document.write( "The slope of lines perpendicular is the negative inverse, -1/m
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