Make sure you are not using the x-coordinates and that you are substituting the correct y-coordinates for the first and second points. The slope is equal to 100. Since the slope-intercept form is y mx b and m slope it would simply be the coefficient of x.
It emphasizes the slope of the line and a point on the line that is not the y-intercept.
The slope is equal to 100. M y2-y1 x2-x1 See this video for an example. For example if the coordinates of your first point are and the coordinates of your second point are. To find the slope you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points.