document.write( "Question 1104733: A line that is perpendicular to y=-2 is a horizontal line. Horizontal lines have a slope of 0, true or false?
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Algebra.Com's Answer #719415 by Alan3354(69443)\"\" \"About 
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Horizontal lines have a slope of 0, true or false?
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\n" ); document.write( "slope = change in vertical divided by change in horizontal.
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