Suppose we are examining the market for Pepsi and the price…

Suppose we are examining the market for Pepsi and the price of Mountain Dew (a substitute in consumption and a substitute in production) decreases. As a result, the demand for Pepsi will and the supply for Pepsi will , the equilibrium price will and the equilibrium quantity will . 

Suppose we are examining the market for Dining out in Pocate…

Suppose we are examining the market for Dining out in Pocatello and more restaurants choose to open a franchise in town and the average income level starts to fall. As a result, the demand for dining out in Pocatello will and the supply for dining out in Pocatello will , the equilibrium price will and the equilibrium quantity will .