We can write the Slope-Intercept form of the equation of a line as:
The slope is a measure of the steepness of a line It is a ratio between vertical change (run) and horizontal change (rise), so we can also write the slope (m) as:
We have the following facts:
If we increase the rise, the slope also increases and if we decrease the rise the slope also decreases.
If we increase the run, the slope decreases and if we decrease the rise the slope increases.