And that means as the reaction is going this way, we're getting more of y. That means our Y, our rate law for going from the products to reactants begins to increase the rate of reaction, rate of reverse reaction. That's because the concentration of Y begins to increase. Eventually, the concentration of this guy and this guy at equilibrium will be exactly constant. They won't be the same, although they could be the same, but they will be constant. The concentration of x will not change and the concentration of Y will also not change.