Unit 2: Elasticity, Consumer Choice, Costs

Lesson 6a: Consumer Decisions: Utility Maximization

Key Graphs

 

Total Utility (TU) and Marginal Utility (MU)

Remember: the marginal is the slope of the total. The slope of the TU curve is getting smaller and smaller (less steep) as the quantity consumed increases. At the same time MU is less and less. At its peak the slope of the TU curve is zero and at this quantity MU is zero (it crosses the X axis).

Which graph below is drawn correctly?

 

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Lesson 6a