Fundamentals of Supply and Demand Market Dynamics

Lernzettel-Auszug

Market Forces of Supply and Demand - Revision Sheet

1. 📌 Essentials

  • Market equilibrium occurs where supply equals demand.
  • Demand curves slope downward; supply curves slope upward.
  • Price elasticity measures responsiveness of quantity to price changes.
  • Surplus occurs when price is above equilibrium; shortage when below.
  • Perfect competition features many buyers and sellers; products are identical.
  • Law of demand: higher prices lead to lower quantity demanded.
  • Law of supply: higher prices lead to higher quantity supplied.
  • Demand shifts due to income, tastes, related goods, expectations.
  • Supply shifts due to technology, input costs, number of sellers.
  • Elasticity influences total revenue: elastic demand means price changes affect total revenue significantly.

2. 🧩 Key Structures & Components

  • Demand Curve — shows the relationship between price and quantity demanded.
  • Supply Curve — depicts how quantity supplied varies with price.
  • Market Equilibrium — intersection of demand and supply curves.
  • Surplus & Shortage — imbalance signals market to adjust prices.
  • Elasticity — measures how responsive Qd or Qs are to price, income, or related good changes.
  • Related Goods — substitutes (positive cross elasticity) and complements (negative cross elasticity).
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Quiz-Vorschau

1. Which of the following is an assumption of the market model?

2. What does the supply curve illustrate in a market diagram?

3. What causes a movement along the demand curve rather than a shift?

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Karteikarten-Vorschau

What are the main assumptions of the market model?

The market model assumes many buyers and sellers, perfect information for all participants, identical goods as perfect substitutes, self-interested behavior with protected property rights, and free entry and exit in markets.

Market equilibrium — definition?

Supply equals demand at this point.

How does the demand curve relate to the law of demand, and what causes it to shift or move along?

The demand curve slopes downward, illustrating the law of demand: as price increases, quantity demanded decreases. Movements along the curve are caused by price changes; shifts are driven by factors like income, tastes, related goods, and expectations.

Demand curve — slope?

Downward sloping.

What is price elasticity of demand, and how does it influence total revenue when prices change?

Price elasticity of demand measures responsiveness of quantity demanded to price changes, calculated as %ΔQd / %ΔP. If demand is elastic (>1), increasing price decreases total revenue; if inelastic (<1), increasing price raises total revenue.

Supply curve — slope?

Upward sloping.

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Häufig gestellte Fragen

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