Supply Curve:A graphical representation of the relationship between the price of a good or service and the quantity supplied. The slope of the supply curve indicates the elasticity of supply.
Price Elasticity of Supply:A measure of the percentage change in quantity supplied in response to a one percent change in price, holding all other factors constant.
Perfectly Elastic Supply: A situation where the quantity supplied changes infinitely in response to even the smallest change in price, resulting in a horizontal supply curve.