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  2. Supply and demand - Wikipedia

    en.wikipedia.org/wiki/Supply_and_demand

    This would cause the entire demand curve to shift changing the equilibrium price and quantity. Note in the diagram that the shift of the demand curve, by causing a new equilibrium price to emerge, resulted in movement along the supply curve from the point (Q 1, P 1) to the point (Q 2, P 2). If the demand decreases, then the opposite happens: a ...

  3. Law of demand - Wikipedia

    en.wikipedia.org/wiki/Law_of_demand

    The demand curve, shown in blue, is sloping downwards from left to right because price and quantity demanded are inversely related. This relationship is contingent on certain conditions remaining constant. The supply curve, shown in orange, intersects with the demand curve at price (Pe) = 80 and quantity (Qe)= 120.

  4. Demand curve - Wikipedia

    en.wikipedia.org/wiki/Demand_curve

    The shift of a demand curve takes place when there is a change in any non-price determinant of demand, resulting in a new demand curve. [11] Non-price determinants of demand are those things that will cause demand to change even if prices remain the same—in other words, the things whose changes might cause a consumer to buy more or less of a ...

  5. Cobweb model - Wikipedia

    en.wikipedia.org/wiki/Cobweb_model

    When supply and demand are linear functions the outcomes of the cobweb model are stated above in terms of slopes, but they are more commonly described in terms of elasticities. The convergent case requires that the slope of the (inverse) supply curve be greater than the absolute value of the slope of the (inverse) demand curve:

  6. Economic equilibrium - Wikipedia

    en.wikipedia.org/wiki/Economic_equilibrium

    At any price above P supply exceeds demand, while at a price below P the quantity demanded exceeds that supplied. In other words, prices where demand and supply are out of balance are termed points of disequilibrium, creating shortages and oversupply. Changes in the conditions of demand or supply will shift the demand or supply curves. This ...

  7. General equilibrium theory - Wikipedia

    en.wikipedia.org/wiki/General_equilibrium_theory

    Partial equilibrium analysis is adequate when the first-order effects of a shift in the demand curve do not shift the supply curve. Anglo-American economists became more interested in general equilibrium in the late 1920s and 1930s after Piero Sraffa 's demonstration that Marshallian economists cannot account for the forces thought to account ...

  8. Price elasticity of demand - Wikipedia

    en.wikipedia.org/wiki/Price_elasticity_of_demand

    In other words, it is equal to the absolute value of the first derivative of quantity with respect to price multiplied by the point's price (P) divided by its quantity (Q d). [21] However, the point elasticity can be computed only if the formula for the demand function , Q d = f ( P ) {\displaystyle Q_{d}=f(P)} , is known so its derivative with ...

  9. Economic graph - Wikipedia

    en.wikipedia.org/wiki/Economic_graph

    The supply and demand model describes how prices vary as a result of a balance between product availability and demand. The graph depicts an increase (that is, right-shift) in demand from D 1 to D 2 along with the consequent increase in price and quantity required to reach a new equilibrium point on the supply curve (S).