Step 1: Understanding the Concept:
Indifference curve analysis is based on the ordinal utility approach.
It assumes that consumers can rank their preferences even if they cannot measure utility in numbers.
Step 2: Detailed Explanation:
Since all points on an indifference curve provide equal satisfaction, the consumer is "indifferent" between them.
Key properties of Indifference Curves (IC):
1. ICs are downward sloping from left to right.
2. ICs are convex to the origin due to the diminishing Marginal Rate of Substitution (MRS).
3. A higher IC represents a higher level of satisfaction.
4. Two ICs can never intersect each other.
Step 3: Final Answer:
Indifference curves are loci of points representing commodity bundles between which a consumer is indifferent because they provide identical utility.