Definition of a Slope:
In mathematics, the slope or gradient of a line describes its steepness, incline, or grade. A higher slope value indicates a steeper incline.
The slope is defined as the ratio of the "rise" divided by the "run" between two points on a line, or in other words, the ratio of the altitude change to the horizontal distance between any two points on the line. Given two points (x1,y1) and (x2,y2) on a line, the slope m of the line is
POSITIVE SLOPE (increasing)  | POSITIVE SLOPE  |
NEGATIVE SLOPE (decreasing)  | NEGATIVE SLOPE  |
ZERO SLOPE (horizontal)  | ZERO SLOPE  |
UNDEFINED SLOPE (vertical)  | UNDEFINED SLOPE  |
STEEPER SLOPE  | STEEPER SLOPE  |
FLATTER SLOPE  | FLATTER SLOPE .jpg) |
