Interactive Supply & Demand Diagram

Shift curves, model indirect taxes and subsidies, and visualise consumer and producer surplus. Built for AQA, Edexcel and OCR A Level Economics.

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Price (P)Quantity (Q)2020404060608080100100P*Q*DSlearnwithotti.co.uk/diagrams

Demand

Shift curve (←→)0.0
Intercept (aD₀)+90.0
Price Elasticity (bD)+1.0

Unit elastic (PED = 1)

Supply

Shift curve (←→)0.0
Intercept (aS₀)+10.0
Price Elasticity (bS)+1.0

Unit elastic (PES = 1)

Price (P*)
50.0
Quantity (Q*)
40.0
Total expenditure (P×Q)
2000

Free-market equilibrium: price = 50.0, quantity = 40.0. The market clears — quantity supplied equals quantity demanded.

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