The video tutorial explains the concept of demand curves, highlighting the law of demand which states that as prices fall, the quantity demanded increases. It discusses how price changes lead to movements along the demand curve, while changes in non-price factors cause shifts in the curve. Inward shifts occur due to factors like decreased income or increased prices of complementary goods, while outward shifts happen when substitute goods' prices rise or direct taxation falls.

What does the law of demand state about the relationship between price and quantity demanded?

• Price and quantity demanded are unrelated.

• As price decreases, quantity demanded increases.

• As price decreases, quantity demanded decreases.

• As price increases, quantity demanded increases.

What happens to the demand curve when there is a change in price?

• The demand curve remains unchanged.

• The demand curve shifts to the left.

• The demand curve shifts to the right.

• There is a movement along the demand curve.

Which of the following causes an inward shift in the demand curve?

• Increase in the price of complementary goods

• Decrease in direct taxation

• Decrease in the price of substitute goods

• Increase in consumer income

What effect does a decrease in direct taxation have on the demand curve?

• It has no effect on the demand curve.

• It causes a movement along the curve.

• It causes an outward shift.

• It causes an inward shift.

How does an increase in the price of a substitute good affect the demand curve?

• It causes an inward shift.

• It causes an outward shift.

• It causes a movement along the curve.

• It has no effect on the demand curve.