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 5

HL exam practice: Supply intercept

A local Auckland supermarket case study gives supply as \(Q_s = - 25 + 7P\). Interpret the minimum price at which firms begin supplying. 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.