Question

using complete sentences, explain what each of the letters in the graph represents.

Explanation:

Identify the curves

Using the Law of Supply and Law of Demand knowledge points, curve C is downward-sloping, representing the demand curve. Curve D is upward-sloping, representing the supply curve.

Identify the equilibrium point

Using the Market Equilibrium knowledge point

$$ \text{Point E is the intersection of supply (D) and demand (C), representing market equilibrium.} $$

Analyze the upper region

Using the Surplus and Shortage knowledge point

$$ \text{At prices above equilibrium, quantity supplied exceeds quantity demanded, so dashed line A represents a surplus.} $$

Analyze the lower region

Using the Surplus and Shortage knowledge point

$$ \text{At prices below equilibrium, quantity demanded exceeds quantity supplied, so dashed line B represents a shortage.} $$

Answer:

• Letter A represents a surplus (or excess supply), which occurs at a price above the equilibrium level where the quantity supplied is greater than the quantity demanded.
• Letter B represents a shortage (or excess demand), which occurs at a price below the equilibrium level where the quantity demanded is greater than the quantity supplied.
• Letter C represents the demand curve, which is downward-sloping to show the inverse relationship between price and quantity demanded.
• Letter D represents the supply curve, which is upward-sloping to show the direct relationship between price and quantity supplied.
• Letter E represents the market equilibrium, which is the point where the supply and demand curves intersect, indicating where quantity supplied equals quantity demanded.