document.write( "Question 822423: What is the slope of a line that is parallel to the x-axis?\r
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Algebra.Com's Answer #494832 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "all horizontal lines have slope = 0
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\n" ); document.write( "Solve and graph linear equations:
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\n" ); document.write( "Solve quadratic equations, quadratic formula:
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\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
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