Gradient
If A(x1,y1) and points B(x2, y2) are points in the plane, x2 – x1 ≠ 0, the gradient of the line segment (interval) AB = 
= 
.
The gradient of a line is the gradient of any line segment (interval) within the line.
If A(x1,y1) and points B(x2, y2) are points in the plane, x2 – x1 ≠ 0, the gradient of the line segment (interval) AB = = .
The gradient of a line is the gradient of any line segment (interval) within the line.