Even though the concepts of supply
are introduced separately, it's the combination of these forces that determine how much of a good or service is produced and consumed in an economy and at what price. These steady-state levels are referred to as the equilibrium price and quantity in a market.
In the supply and demand model, the equilibrium price and quantity in a market is located at the intersection of the market supply and market demand curves. Note that the equilibrium price is generally referred to as P* and the market quantity is generally referred to as Q*.