IB skill practice

Analyse linear demand and supply functions

Economics HL skill with original exam-style quantitative, diagram, data-response, and evaluation seeds.

Paper 3 Paper 1 5 marks Difficulty 3

HL exam practice: Choke price

A Melbourne transport market extract gives demand as \(Q_d = 110 - 4P\). Interpret the price at which quantity demanded would fall to zero. Use the diagram labels, numerical evidence, and policy context before writing the final judgement. Enter the answer and choose the interpretation that best matches the HL economic evidence.

Worked practice: economic evidence and answer

Identify the economic evidence first, then state the result and interpretation.