It emphasizes the slope of the line and a point on the line that is not the y-intercept. The slope is the rate of change from one month to the next. Determine the slope of the line passing through the points.
Understand what slope is and how to calculate slope when given a graph.
In Excel Slope is calculated by considering the datum points on a straight line called as Known Xs and Known Ys. Plug in these values to the slope formula to find the slope. Plug the y-coordinates into the slope formula. For example if the coordinates of your first point are and the coordinates of your second point are.