ABCDEFGHIJKLMNOPQRSTUVWXYZ Definition of Gradient more ... How steep a line is. In this example the gradient is 3/5 = 0.6 Also called "slope". Have a play (drag the points): ../geometry/images/geom-line-equn.js?mode=slope See: Equation of a Straight Line, Slope, Line Gradient (Slope) of a Straight Line