Practice prompt · Q:economics-and-market-foundations/distinguish-demand-change-001

Distinguish a demand movement from a shift

Separate an own price movement on one demand function from a stipulated buyer population shift at a common reference price.

Updated Aug 7, 2026 Review due Nov 7, 2026

Practice

Check your answer

Choose a response, then check the answer and explanation.

Which statement correctly distinguishes the two comparisons in the fictional Linden packet?

Choose the best answer. a Moving from $50 to $60 on Qd = 1,400 - 10P reduces quantity demanded; replacing that function with Qd = 1,600 - 10P raises demand because quantity is 200 higher at the common $60 price. b Both comparisons are demand shifts because any change in quantity means demand changed. c Neither comparison can be described because demand means only the quantity actually sold.

Your answer stays on this page. It is not sent or saved.

Show explanationHide explanation

Answer: a

Choice a. The baseline price change moves from 900 to 800 along one demand function. The stipulated buyer expansion gives 1,000 at the common $60 price, 200 above baseline.