How do you find the slope of a demand curve?
The slope of a demand curve can be found just like the slope of any other line. Remember, in order to find a slope, you must divide rise by run. In the case of a demand curve, this means dividing change in price by change in quantity demanded. Mathematically, this looks like
Note that in order to calculate this slope, you need two points that you know are on the demand curve. The ordered pairs of course being