Law of Supply Study Notes

What is Supply?
- Supply refers to the quantity of a particular good or service that businesses are willing to sell at different prices, indicating sellers' preparedness to provide products based on price variations.

Definition:
- The law of supply states that the quantity of a particular good or service that sellers are prepared to supply varies directly with the change in price, assuming other factors remain constant.
- This explains that:
- Expansion in Supply:
  - Occurs when the price increases, causing a movement upwards along the supply curve.
  - More goods are supplied at higher prices.
- Contraction in Supply:
  - Occurs when the price decreases, resulting in a decrease in the quantity supplied and a movement downwards along the supply curve.
  - Fewer goods are supplied at lower prices.

Figure 2.11: Supply Line for Bananas
- Illustrates the correlation between the price per kg of bananas and the quantity supplied (measured in '000 kg).
Price and Quantity Supplied Data:
- Points on the graph depict the following:
- When price is at $1/kg, the supply is 1,000 kg.
- At $2/kg, supply increases to 2,000 kg (Point A).
- At $3/kg, supply is 3,000 kg.
- At $4/kg, supply reaches 4,000 kg (Point B).
- At $5/kg, supply peaks at 5,000 kg.

Expansion:
- Movement from Point A (2000 kg at $2/kg) to Point B (4000 kg at $4/kg) as price rises.
- Designated as an expansion in supply.
Contraction:
- Movement from Point B (4000 kg at $4/kg) back to Point A (2000 kg at $2/kg) as price drops.
- Designated as a contraction in supply.

Discussion Topic:
- "Would you sell your kidney for $100,000?"
- Reflecting on the value of goods/services, presentation prompts a discourse on pricing, supply, and ethical limits regarding personal goods in economic transactions.

Encouragement for students to engage in and reflect on their learning:
- Complete the sentence: "As the price increases…"
Engage with supply concepts and consider implications for real-world scenarios.