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Law of Supply Definition, Graph, Examples, How it Works?

assumptions of law of supply

If there is no speculation about products, then the economy is assumed to be at balance and people are assumptions of law of supply satisfied with the available products and do not require any change. After a certain point, the rise in wages does not increase the supply of labour. This happens due to change in preference of labour for leisure hours. Thus, supply of these goods cannot increase or decrease beyond a limit. In case of these goods, a rise or fall in price does not impact the supply. The exception to the law of supply is represented on the regressive supply curve or backward sloping curve.

assumptions of law of supply

How Does the Law of Supply Work in Economics?

Producers will be interested in supplying more inelastic goods such as gas because they will earn more profit from it. If ten people want to buy a pen, and there’s only one pen, the sale will be based on the level of demand for the pen. Browse all our articles on finance, accounting, and economic topics. Explore our free career resources, including our interactive career map. It’s time to see the Law of Supply Graph, Table, its underlying principles, determinants, assumptions, limitations and examples. The Law of Supply can be better understood with the help of the following table and graph.

Profit Maximization: Definition, Formula, Short Run & Long Run

  1. It has been observed that as wages increase, a worker might work for a lesser number of hours than before.
  2. The basic aim of producers, while supplying a commodity, is to secure maximum profits.
  3. Supply Schedule is a tabular presentation of various combinations of price and quantity supplied by the seller or producer during a period of time.

So, when the price of those goods and services increases, suppliers will increase the amount of them that they’re selling, which should allow them to make a greater profit. In other words, the positive correlation between price and quantity supplied is based on the potential increase in profitability that occurs with an increase in price. The law of supply and demand is essential because it helps investors, entrepreneurs, and economists understand and predict market conditions. Consumer demand for a good commonly decreases as its price rises.

Chapter 9: Forms of Market

The law of supply and demand reflects two central economic principles that describe the relationship between price, supply, and demand. Price discovery based on supply and demand curves assumes a marketplace in which buyers and sellers are free to transact or not depending on the price. It is important to note that supply is affected by a number factors in addition to price and the law of supply applies only under the assumption that these other factors remain constant.

The Mathematical Equation for the Supply Curve

When prices become unreasonable, consumers change their preferences and move away from the product. If the prices of substitutes of a commodity fall, then the tendency of consumers divert to substitutes; therefore, the supply of a commodity falls without any change in price. In economically backward countries, production and supply cannot be increased with rise in price due to shortage of resources.

The law of supply is so intuitive that you may not even be aware of all the examples around you. For example, when college students learn that computer engineering jobs pay more than English professor jobs, the supply of students with majors in computer engineering increases. If consumers start paying more for cupcakes than for doughnuts, bakeries will increase their output of cupcakes and reduce their output of doughnuts to increase their profits. The Law of Supply is a cornerstone of economic analysis, providing valuable insights into how producers respond to changes in prices and market conditions. Further, in this diagram SBS’ represents a backward slopping supply curve for labour as a commodity.

The production of goods decreases due to a decrease in investment. The law of supply is based on a moving quantity of materials available to meet a particular need. In figure (4.1) the price is plotted on the vertical axis and the quantity supplied on the horizontal axis.