On. Yu. Mamedov. Modern economics (№ 464061)

A market economy is an endless interaction of supply and demand. Indeed, any act of purchase and sale is preceded by two phenomena - supply and demand, the magnitude of which determines the volume of transactions and the price level on the market. And since a market economy is the dynamics of prices and the volume of transactions, it is possible to achieve their desired change by regulating the amount of demand (influencing the income of consumers) and the amount of supply (influencing the profit of producers).