Question 1

Refer to the first image. As the consumer's income increases from $$P_1 to$$ $$P_5$$, the equilibrium consumption bundle moves from $$Q_1 to$$ $$Q_5. $$What does the shape of the Income Consumption Curve (ICC) in this diagram indicate about Good Y?

Accepted Answer

Good Y is a normal good.

Question 2

In the first image, as the consumer moves from $$Q_1 to$$ $$Q_5$$ along the ICC, what happens to the consumption of Good X and Good Y?

Accepted Answer

Consumption of both Good X and Good Y increases.

Question 3

Suppose the consumer in the first image faces the budget constraint $$P_X X + P_Y Y = I. If $$the price of Good X decreases while income and $$P_Y$$ remain constant, what happens to the slope of the budget line?

Accepted Answer

The slope becomes flatter.

Question 4

In the second image, as the price of Good X decreases from $$P_1 to$$ $$P_3$$, what can be inferred about the relationship between Good X and Good Y?

Accepted Answer

They are substitutes.

Question 5

In the second image, what does the movement from $$IC_1 to$$ $$IC_3$$ represent?

Accepted Answer

An increase in utility due to a decrease in the price of Good X.

Question 6

Suppose the consumer's utility function is $$U(X, Y) = X^a Y^b$$ with $$a, b \u003e 0. If $$the budget line rotates outward as in the second image, what happens to the consumer's optimal bundle?

Accepted Answer

The consumer will consume more of Good X and less of Good Y.

Question 7

If the dashed curve in the first image (ICC) bends toward the Good X axis as income increases, what does this imply about Good X?

Accepted Answer

Good X is an inferior good at higher income levels.

Question 8

In the context of the first image, if the ICC is a straight line through the origin, what does this imply about the consumer's preferences?

Accepted Answer

The consumer allocates income between Good X and Good Y in fixed proportions as income changes.

Question 9

Suppose in the second image, the price of Good X falls and the consumer moves from $$P_1 to$$ $$P_3. $$Which effect is represented by the movement from the initial to the final equilibrium?

Accepted Answer

Both the substitution and income effects.

Question 10

If the consumer's indifference curves in the first image were thick rather than thin, which assumption of consumer theory would be violated?

Accepted Answer

More is better (monotonicity).

Question 11

In the first image, if the ICC bends backward toward the Y-axis at higher income levels, what does this indicate about Good Y?

Accepted Answer

Good Y becomes an inferior good at higher income levels.

Question 12

Suppose the consumer in the second image faces the budget constraint $$P_X X + P_Y Y = I. If $$both $$P_X$$ and $$P_Y$$ increase proportionally, what happens to the budget line?

Accepted Answer

It shifts inward parallelly.

Question 13

If the consumer's preferences are represented by right-angled indifference curves, which of the following best describes the relationship between Good X and Good Y?

Accepted Answer

They are perfect complements.

Question 14

In the first image, if the ICC is upward sloping and both Good X and Good Y are normal goods, what will happen to the Engel curves for both goods?

Accepted Answer

Both Engel curves will be upward sloping.

Microeconomics: Indifference Curves, Budget Lines, and Consumer Choice

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