These examples show models of bisubstrate reactions and the rate equations derived from them, just as the Michaelis-Menton equation is derived from the simplest model of enzyme action. Each example also shows how plots of linear forms of rate equations provide signatures of each model. Rate data that obey a specific rate equation are compatible with the model from which that equation is derived. This compatibility does not PROVE that the model is correct, but incompatibility of data with a rate equation can prove definitively that a given model is incorrect.