Supply is the quantity of a good or service that producers are willing and able to offer at various prices during a specific time period, ceteris paribus.
The supply curve is upward sloping.
The law of supply is the principle that states that as the price of a product increases, the quantity supplied will usually increase, ceteris paribus.
Individual supply is the supply of one product from one firm at every price.
Market supply is the sum of all the individual supplies of a product at every price.
Non-price determinants of supply:
changes in costs of factors of production
prices of related goods (joint and competitive supply)