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Microeconomics: The Role of Markets

Individual and market demand and joint, competitive and composite demand

  • 3 things to know
  • Component 01

Overview

Recall questions on the demand curve and its downward slope, income and substitution effects, effective and market demand, and joint, competitive and composite demand.

What you need to know

Answer each one before you reveal it.

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Key term

Why is the market demand curve flatter than an individual consumer's demand curve?

Process

How does diminishing marginal utility explain the slope of the demand curve?

Key term

What is measured on each axis of a demand curve diagram?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is measured on each axis of a demand curve diagram?

    Model answer

    Price is measured on the vertical axis and quantity demanded per period of time on the horizontal axis.

  2. 2

    Describe the shape and slope of a typical demand curve.

    Model answer

    It slopes downwards from left to right, showing that a lower price is associated with a larger quantity demanded.

  3. 3

    How does the income effect explain the downward slope of demand?

    Model answer

    A fall in price raises the real purchasing power of the consumer's income, so they can afford to buy more of the good.

  4. 4

    How does the substitution effect explain the downward slope of demand?

    Model answer

    A fall in price makes the good cheaper relative to its substitutes, so consumers switch their spending towards it.

  5. 5

    How does diminishing marginal utility explain the slope of the demand curve?

    Model answer

    Each additional unit gives less satisfaction than the last, so consumers will only buy more units if the price falls.

  6. 6

    Define effective demand.

    Model answer

    The quantity of a good consumers are both willing and able to buy at a given price over a given period.

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