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  2. Law of supply - Wikipedia

    en.wikipedia.org/wiki/Law_of_supply

    A supply is a good or service that producers are willing to provide. The law of supply determines the quantity of supply at a given price. [5]The law of supply and demand states that, for a given product, if the quantity demanded exceeds the quantity supplied, then the price increases, which decreases the demand (law of demand) and increases the supply (law of supply)—and vice versa—until ...

  3. Total revenue test - Wikipedia

    en.wikipedia.org/wiki/Total_revenue_test

    If an increase in price causes a decrease in total revenue, then demand can be said to be elastic, since the increase in price has a large impact on quantity demanded. Different commodities may have different elasticities depending on whether people need them (necessities) or want them (accessories). Examples: Product A currently sells for $10.

  4. Supply and demand - Wikipedia

    en.wikipedia.org/wiki/Supply_and_demand

    If the demand decreases, then the opposite happens: a shift of the curve to the left. If the demand starts at D 2, and decreases to D 1, the equilibrium price will decrease, and the equilibrium quantity will also decrease. The quantity supplied at each price is the same as before the demand shift, reflecting the fact that the supply curve has ...

  5. Price elasticity of demand - Wikipedia

    en.wikipedia.org/wiki/Price_elasticity_of_demand

    As price decreases in the elastic range, the revenue increases, but in the inelastic range, revenue falls. Revenue is highest at the quantity where the elasticity equals 1. A firm considering a price change must know what effect the change in price will have on total revenue. Revenue is simply the product of unit price times quantity:

  6. Inferior good - Wikipedia

    en.wikipedia.org/wiki/Inferior_good

    In economics, inferior goods are goods whose demand decreases when consumer income rises (or demand increases when consumer income decreases). [2] [3] This behaviour is unlike the supply and demand behaviour of normal goods, for which the opposite is observed; [4] normal goods are those goods for which the demand rises as consumer income rises ...

  7. Negative pricing - Wikipedia

    en.wikipedia.org/wiki/Negative_pricing

    West Texas Intermediate oil prices briefly went negative for the first time in history in April 2020. [1] In economics, negative pricing can occur when demand for a product drops or supply increases to an extent that owners or suppliers are prepared to pay others to accept it, in effect setting the price to a negative number. This can happen ...

  8. Cross elasticity of demand - Wikipedia

    en.wikipedia.org/wiki/Cross_elasticity_of_demand

    If products A and B are complements, an increase in the price of B leads to a decrease in the quantity demanded for A, as A is used in conjunction with B. [2] Equivalently, if the price of product B decreases, the demand curve for product A shifts to the right reflecting an increase in A's demand, resulting in a negative value for the cross ...

  9. Slutsky equation - Wikipedia

    en.wikipedia.org/wiki/Slutsky_equation

    In contrast, when the price decreases, the budget set moves outward, which leads to an increase in the quantity demanded. The substitution effect is due to the effect of the relative price change while the income effect is due to the effect of income being freed up. The equation demonstrates that the change in the demand for a good, caused by a ...