Microeconomics · free preview

Willingness to Pay and the Demand Curve

A demand curve is every buyer's willingness to pay stacked in order, falling price admits more buyers, and the whole curve shifts when anything besides the good's own price changes.

1. Reservation prices

Reservation prices

2. The curve is the list, drawn

The curve is the list, drawn

3. What shifts the whole curve

What shifts the whole curve

4. A first algebraic form

A first algebraic form

5. Who buys at a given price

Six buyers have reservation prices for a jar of honey of 55, 48, 42, 35, 28 and 20 dollars. If the market price is 30 dollars, how many jars are demanded and why?

6. Substitutes and complements

Honey and jam are substitutes for many breakfast eaters, and honey and scones are complements. What happens to the demand curve for honey if the price of jam falls sharply while the price of scones is unchanged?

7. Quantity demanded from the line

A market demand curve is Q = 130 - 3P, where Q is jars per week and P is dollars per jar. Compute the quantity demanded when the price is 25 dollars and write the number.

8. Counting the buyers

Four buyers hold reservation prices of 60, 50, 41 and 30 dollars for a jar of rare honey. If the market price is 45 dollars, how many jars are demanded?

9. Movement or shift

Which of the following describes a movement along the demand curve for honey rather than a shift of the curve?

10. Quantity demanded by formula

A market demand curve is Q = 130 - 3P, where Q is jars per week and P is dollars per jar. Compute the quantity demanded at a price of 20 dollars, and write the number.

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