The measure of the tilt of a line, the rise over run or how much the line moves up for every movement to the right.

For a straight line in the plane, the slope is the tangent of the angle it forms with the positive X axis.

For a curve the slope is the slope of the tangent line.

If the slope is constant a line is straight.

A line joining two points

The slope is given by:


m = slope
x1,y1 = cartesian coordinates of point 1
x2,y2 = cartesian coordinates of point 2


See also: Intercept, Rate of Change, Slope of a Linear Function, Straight Line.

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Subjects: Mathematics