Using the model of supply and demand, discuss the effect on equilibrium price and equilibrium quantity of the following situations. Also a properly-labeled diagram to support your discussion

You are exploringthe market for Carnivals in a particular city. The units of price are $/ticket and the quantity of tickets is measured in thousands per month. As a starting point, consider the market is initially in equilibrium. Assume there is a decrease in the average household income, all else equal. What would you expect to happen to the prices and quantities of tickets in this city?