Asked by Kendall

When writing an equation in slope-intercept form, does be have to be a positive number or can it be negative? For example, y=-3x-5.
Answered by Steve
positive means that t increases as x increases. The line rises up to the right

negative means that y decreases as x increases. The line falls down to the right.

Visit wolframalpha.com and type in a few functions to see how the value of m affects the graph.

For example, if you enter "y=-3x-5" it will show you the graph and some other info.
Answered by Henry
Steve, that was an excellent explanation.
Answered by Steve
aww, shucks. >scuff scuff<
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