Hukum Permintaan | Ekonomi Kelas X - KHATULISTIWA MENGAJAR

Summary

The video explains the concept of demand in economics, particularly focusing on the law of demand, which states that as the price of a product decreases, the quantity demanded increases. It demonstrates how demand curves can shift due to factors like income levels and the price of complementary or substitute goods. A practical example is given of how a decrease in price or an increase in income leads to higher demand. The video also touches on how shifts in demand curves can occur with changes in consumer preferences, population, or future price expectations.

Takeaways

• 😀 Demand refers to how much consumers want to purchase a good or service at various price levels.
• 😀 According to the law of demand, when the price of a product decreases, the quantity demanded increases, and vice versa.
• 😀 A demand curve can shift or move. Movement happens when there's a change in the product's price.
• 😀 For example, when the price of a shirt drops from Rp100,000 to Rp80,000, the quantity demanded rises from 120 to 150 shirts.
• 😀 A movement along the demand curve happens when there is a change in the price of the product, causing the curve to shift from point A to point B.
• 😀 Shifts in the demand curve occur due to factors like income levels. For instance, if your income increases, you can afford to buy more shirts.
• 😀 If your income rises from Rp200,000 to Rp300,000, your demand for shirts increases from 2 to 4 shirts, shifting the demand curve to the right.
• 😀 When income increases, the demand curve shifts to the right, and when income decreases, it shifts to the left.
• 😀 Other factors that can shift the demand curve include the prices of substitute goods, consumer preferences, population size, and consumer expectations.
• 😀 When the price of complementary goods rises, the demand curve shifts left, indicating a decrease in demand for the related product.

Q & A

What is the law of demand?

The law of demand states that as the price of a product decreases, the quantity demanded by consumers increases, and vice versa.

How does the price of a product affect consumer demand?

When the price of a product decreases, more people are willing to buy it, which increases the quantity demanded. Conversely, when the price increases, demand tends to decrease.

What happens to the demand curve when the price of a product changes?

The demand curve will move (shift) either left or right based on changes in the price. A decrease in price causes the demand curve to move down and to the right, while an increase in price moves it up and to the left.

What are some factors that can shift the demand curve?

Factors such as changes in income, consumer preferences, population size, and the prices of substitute or complementary goods can shift the demand curve to the right or left.

What is meant by a 'movement' along the demand curve?

A movement along the demand curve occurs when there is a change in the price of the product, causing a change in the quantity demanded, without shifting the curve itself.

Can the demand curve shift to the left? If so, what causes it?

Yes, the demand curve can shift to the left. This happens when factors like a decrease in consumer income, lower consumer preferences, or a rise in the price of complementary goods cause people to buy less of the product.

What effect does a rise in consumer income have on the demand curve?

When consumer income rises, people are able to purchase more goods, which causes the demand curve to shift to the right, indicating an increase in demand.

How does the price of substitute goods affect demand?

If the price of a substitute good rises, consumers may switch to the lower-priced alternative, increasing the demand for the original product. This causes the demand curve for the product to shift to the right.

What is the impact of changes in population on demand?

An increase in population generally increases demand for goods and services, causing the demand curve to shift to the right. Conversely, a decrease in population leads to a leftward shift in the demand curve.

How do complementary goods influence the demand curve?

When the price of a complementary good increases, the demand for the related product decreases, causing the demand curve to shift to the left. On the other hand, a price decrease in complementary goods can increase demand, shifting the curve to the right.