Law of Demand

In economics, supply and demand describe market relations between prospective sellers and buyers of a good. The supply and demand model determines price and quantity sold in the market. The model is fundamental in microeconomic analysis of buyers and sellers and of their interactions in a market. It is also used as a point of departure for other economic models and theories. The model predicts that in a competitive market, price will function to equalize the quantity demanded by consumers and the quantity supplied by producers, resulting in an economic equilibrium of price and quantity. The model incorporates other factors changing such equilibrium as reflected in a shift of demand or supply.
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if supply is held constant, an increase in demand leads to an increased market price, while a decrease in demand leads to a decreased market price.

Demand exhibits a direct relationship to price. If all other factors remain constant, an increase in demand leads to an increased price, while a decrease in demand leads to a decreased price.

Other things being held constant, the lower the price of a good (or service), the greater the quantity of it that will be demanded by purchasers at any given time.
[See also: demand curve , demand schedule , demand , law of supply ]

Law of demand
(Econ) Quy luật của cầu.+ Một quan điểm được công nhận rộng rãi, nếu mọi yếu tố khác không đổi thì hàng hoá sẽ được mua nhiều hơn nếu giá cả thấp hơn, và hàng hoá sẽ được mua ít hơn nếu giá cả tăng lên.
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