Supply: 

The term supply is used to imply the amount of a good or service that is available for purchase at a given price. Generally supply is described by economists as the relationship between the quantity of a good or service that producers or sellers will offer for sale and the price charged for that good. More precisely and formally supply can be defined as "the total quantity of a good or service that is available for purchase at a given price." So it can be stated that supply represents the entire relationship between the quantity available for sale and all possible prices charged for that good or service. The quantity of a good that is supplied at a specific price is known as the quantity supplied. Usually a time period is also given when describing quantity supplied. According to the law of supply, ceteribus paribus (which means 'assuming all else is held constant'), the quantity supplied for a good rises as the price rises. There is a direct relationship between price and quantity supplied. In other words, the quantity supplied and price is positively related. The supply curve is basically an upward sloping curve because of this positive relationship between price and the quantity supplied. Price is a major determinant in the quantity supplied of a good or service. A supply schedule is a table which lists the possible prices for a good or service and the associated quantity supplied. A supply curve is simply a supply schedule presented in graphical form. The price is given on the vertical axis and quantity supplied is given on the horizontal axis. Several factors cause changes in supply, such as the prices of other goods, the number of sellers, prices of inputs, technology and expectation of sellers. These factors can cause the supply curve to shift.