A graphical object showing the relationship between the price of a good and the amount of the good that buyers are willing and able to purchase at various prices is called a demand curve. The demand curve is typically plotted with price on the vertical (y) axis and quantity demanded on the horizontal (x) axis. It generally slopes downward from left to right, reflecting the law of demand: as the price of a good increases, the quantity demanded decreases, and vice versa. Each point on the curve represents a specific price-quantity combination that consumers are willing to buy during a given time period, assuming other factors remain constant (ceteris paribus)
. This curve helps illustrate consumer behavior and market demand, and it is fundamental in analyzing how price changes affect the quantity demanded of goods and services. Exceptions to the typical downward slope exist, such as with Giffen or Veblen goods, where demand may increase as price rises, but these are rare cases
