We can also actually use a double reciprocal plot to basically differentiate between the three different types of reversible inhibitors. Remember, we have competitive inhibitors, we have uncompetitive and we have non competitive. And we can use the double reciprocal plot, as we'll see in just a moment, to basically differentiate between which type of inhibitor is actually present in our mixture. So let's begin by discussing how a competitive inhibitor will actually affect this double reciprocal curve. So the red curve describes the curve in the absence of that competitive inhibitor, and the purple curve describes that curve in the presence of that inhibitor. So notice what happens in the presence of the inhibitor.