Slope is expressed as the percentage of rise/fall in elevation over a specific distance and is determined by dividing the change in elevation by the length of the line. So if a line segment is 10 feet long and rises or falls 1 foot in elevation, the slope would be 1 ft/10 ft or 10 percent.
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If you have an equation that looks like y=mx+b then the m is the slope. If you have two points then you use the formula Y2-Y1/X2-X1
the slope of a line = the Change in Y divided by the Change in X
you look at the line and see if there are any direct points on the line the slope formula
Line a is parallel to line b, m, and . Find .
An equation of a line requires two parameters. The slope, by itself, is not enough.