-1 is the slope
The slope of the line in 2 dimensional Cartesian coordinate planes are usually represented by letter (m m), and it is sometimes called underline {the rate of change} between 2 points.
given,
(-3,5) and (5,-3)
= [tex]\frac{-3 -5 }{5+3}[/tex]= -8÷8= -1 is the slope
United States federal interstate systems has a maximum of 7 percent (7%) gradient (slope) due to usage by long haul trucks which will often be loaded near maximum weight. The maximum gradient of local roads are usually restricted by local ordinance and will be on the order of twelv % to fifteen slopes.
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