For example, suppose that P is the equilibrium price in a simple market, determined by supply and demand.
Marx's concept of value is not intended to be an equilibrium price.
The equilibrium price is at the intersection of the supply and demand curves.
For this reason prices may appear flexible or otherwise, depending on the theory of the equilibrium price used in the test.
Another example would be an equilibrium price calculated by an economist.
This will cause changes in the equilibrium price and quantity in the market.
A price floor can be set below the free-market equilibrium price.
This would cause the entire demand curve to shift changing the equilibrium price and quantity.
The equilibrium price for a certain type of labor is the wage rate.
The price at which markets clear is the "equilibrium price."