And eventually, every single time we do this for any enzyme, this is the curve that we're going to obtain. So notice what the blue curve tells us. Initially, at the beginning, when we have relatively little amount of S in that mixture, this blue curve will resemble a straight line. So from about here to about here, this blue curve looks like a straight line. And what that basically means initially, when we add a small amount of concentration of S into our mixture, the rate, the velocity of that enzyme, the rate at which the enzyme catalyzes the reaction will be directly proportional. So we'll have a straight line with respect to that S, the concentration of substrate.