What would happen to a graph if you added a catalyst?

Adding a catalyst to a reaction represented by a graph would typically lower the activation energy, leading to a faster rate of reaction without being consumed in the process. On a reaction progress graph, this would be reflected by a steeper slope in the rate of reaction over time. However, the overall energy levels of reactants and products would remain unchanged, meaning the position of the reactants and products on the energy axis would stay the same. Thus, the catalyst alters the pathway of the reaction but not the thermodynamics.