Q2
, Q4
We may split the overall effect into the income effect and the substitution effect when examining the
consequences of a price shift on good Y, where Y is viewed as an inferior good.
1. Substitution Effect:
In the event that good Y's price drops, consumers would likely switch from Y to other goods—especially
substitutes—since Y will now be less appealing overall because of its reduced price, provided Y is inferior.
If Y is subpar, the replacement effect will cause the buyer to spend less on Y as the price drops, directing more
of their money towards other products—especially Y substitutes.
2. Income Effect:
Since Y is viewed as a lower-quality item, a fall in Y's price would have an income impact that would raise the
consumer's real income and, if Y is a typical good in terms of income effect, boost their demand for Y.
Regardless of the substitution impact, the customer will desire more of Y as a result of the real income gain.
Total Effect:
The total effect combines both the substitution effect and the income effect.
For an Inferior Good (Y):
When the price of an inferior good (Y) decreases:
The substitution effect decreases the quantity demanded of Y because consumers substitute away from Y
towards other goods.The income effect increases the quantity demanded of Y because the increase in real
income makes Y more affordable and attractive.The net effect on the quantity demanded of Y depends on the
relative strength of the substitution effect (which reduces demand) and the income effect (which increases
demand).
Classification of X and Y as Substitutes/Complements based on Substitution Effect:
Goods X and Y are substitutes if the substitution effect of a price change in Y leads to an increase in the
quantity demanded of X.
Goods X and Y are complements if the substitution effect of a price change in Y leads to a decrease in
the quantity demanded of X.
Explanation:
X and Y are replacements if the substitution effect predominates, which means that a drop in Y's price
causes a rise in the quantity of X that is requested. This occurs as a result of consumers switching from
consuming more Y to more X when Y becomes comparatively less expensive.
X and Y are complementary if the substitution effect shows a drop in the amount requested of X when
the price of Y drops. In this instance, customers are buying more of Y, which complements X, therefore
the price drop of Y lowers the demand for X.
The direction of the substitution impact that results from a change in Y's price determines whether X and
Y are complements or substitutes. The replacement effect-based categorization shows how buyers
modify their spending habits in reaction to Y price fluctuations, viewing Y as a subpar commodity.
, Q4
We may split the overall effect into the income effect and the substitution effect when examining the
consequences of a price shift on good Y, where Y is viewed as an inferior good.
1. Substitution Effect:
In the event that good Y's price drops, consumers would likely switch from Y to other goods—especially
substitutes—since Y will now be less appealing overall because of its reduced price, provided Y is inferior.
If Y is subpar, the replacement effect will cause the buyer to spend less on Y as the price drops, directing more
of their money towards other products—especially Y substitutes.
2. Income Effect:
Since Y is viewed as a lower-quality item, a fall in Y's price would have an income impact that would raise the
consumer's real income and, if Y is a typical good in terms of income effect, boost their demand for Y.
Regardless of the substitution impact, the customer will desire more of Y as a result of the real income gain.
Total Effect:
The total effect combines both the substitution effect and the income effect.
For an Inferior Good (Y):
When the price of an inferior good (Y) decreases:
The substitution effect decreases the quantity demanded of Y because consumers substitute away from Y
towards other goods.The income effect increases the quantity demanded of Y because the increase in real
income makes Y more affordable and attractive.The net effect on the quantity demanded of Y depends on the
relative strength of the substitution effect (which reduces demand) and the income effect (which increases
demand).
Classification of X and Y as Substitutes/Complements based on Substitution Effect:
Goods X and Y are substitutes if the substitution effect of a price change in Y leads to an increase in the
quantity demanded of X.
Goods X and Y are complements if the substitution effect of a price change in Y leads to a decrease in
the quantity demanded of X.
Explanation:
X and Y are replacements if the substitution effect predominates, which means that a drop in Y's price
causes a rise in the quantity of X that is requested. This occurs as a result of consumers switching from
consuming more Y to more X when Y becomes comparatively less expensive.
X and Y are complementary if the substitution effect shows a drop in the amount requested of X when
the price of Y drops. In this instance, customers are buying more of Y, which complements X, therefore
the price drop of Y lowers the demand for X.
The direction of the substitution impact that results from a change in Y's price determines whether X and
Y are complements or substitutes. The replacement effect-based categorization shows how buyers
modify their spending habits in reaction to Y price fluctuations, viewing Y as a subpar commodity.
