So V Naught, which is the Y value on the following curve, is equal to V max, which is basically this maximum Y coordinate multiplied by the concentration of the substrate S divided by Km plus the concentration of substrate S and this is the equation that describes this blue curve. And notice in this equation, v max is a constant. It's simply this quantity that depends on the height of this red line. Km is also constant. It depends on these three rate constants of the three equations that we described a moment ago. And this S is simply the x value on the following coordinate plane.