HUKUM PERMINTAAN & KURVA PERMINTAAN

Summary

In this video, the concept of the Law of Demand and the Demand Curve is explained. The Law of Demand states that when the price of a good or service rises, the quantity demanded will decrease, and when the price falls, the quantity demanded will increase. Through examples like the price change of mangoes and guavas, the relationship between price and demand is made clear. The Demand Curve is illustrated, showing how it moves from the top left to the bottom right as prices decrease and demand increases. Viewers are also prompted to think about the characteristics of a demand curve.

Takeaways

• 😀 The law of demand states that when the price of a good or service rises, the quantity demanded decreases, and vice versa.
• 😀 The relationship between price and demand is inversely proportional: as price increases, demand decreases, and as price decreases, demand increases.
• 😀 An example of demand law: When the price of guava decreases, a buyer (Santi) will purchase more, and when the price of mango increases, she will buy less.
• 😀 The law of demand can be summarized as: if the price (P) increases, the quantity demanded (QD) decreases, and if the price decreases, the quantity demanded increases.
• 😀 The demand curve shows the relationship between the price of a good and the quantity demanded by consumers at various price levels.
• 😀 The demand curve typically slopes from the top left (high price, low quantity) to the bottom right (low price, high quantity).
• 😀 An example demand curve: At a price of Rp3,200 per kilo, 2 quintals of potatoes are demanded. At a lower price of Rp3,000 per kilo, 3 quintals are demanded.
• 😀 As price decreases, the quantity demanded increases. For instance, at Rp2,400 per kilo, the quantity demanded of potatoes increases to 6 quintals.
• 😀 The demand curve reflects the change in quantity demanded with changes in price, showing a downward-sloping curve from left to right.
• 😀 The concept of price elasticity is implicitly discussed as the quantity demanded varies significantly with price changes, demonstrating the sensitivity of demand to price fluctuations.

Q & A

What is the law of demand?

The law of demand states that if the price of a good or service increases, the quantity demanded will decrease, and if the price decreases, the quantity demanded will increase, assuming other factors remain constant.

How does a price decrease affect consumer demand according to the law of demand?

When the price of a good or service decreases, consumers tend to increase the quantity they demand, as seen when the price of the guava dropped, leading the consumer (Santi) to buy more.

What happens when the price of a product increases, based on the law of demand?

When the price increases, the quantity demanded decreases. In the script, Santi intended to buy 6 kg of mangoes, but due to a price increase, she reduced her purchase to 3 kg.

What is the relationship between price and quantity demanded in the demand curve?

In a demand curve, there is an inverse relationship between price and quantity demanded. As the price decreases, the quantity demanded increases, and vice versa.

What is the definition of a demand curve?

A demand curve is a graphical representation showing the relationship between the price of a good or service and the quantity demanded by consumers at various price levels.

What are the axes of the demand curve and what do they represent?

The vertical axis (Y-axis) represents the price of a good or service, while the horizontal axis (X-axis) represents the quantity demanded.

In the example with potatoes, how does the price change affect the quantity demanded?

When the price of potatoes decreases from Rp3,200 to Rp2,400 per kilogram, the quantity demanded increases from 2 quintals to 6 quintals, illustrating the law of demand.

What conclusion can be drawn from the data about the price and demand for potatoes?

The data shows that as the price of potatoes decreases, the quantity demanded increases. This aligns with the law of demand, where there is a negative correlation between price and quantity demanded.

What are the key characteristics of a demand curve?

A demand curve typically slopes downward from left to right, reflecting the inverse relationship between price and quantity demanded. As price decreases, the quantity demanded increases.

How does the demand curve illustrate the law of demand?

The demand curve visually demonstrates the law of demand by showing a downward slope, indicating that when prices fall, the quantity demanded rises, and when prices rise, the quantity demanded falls.