Economics (AS & A Level) · Oct / Nov 2022 · Paper 11 · Question 13

The diagram shows the market for electric steel-plated switches used in new houses. [diagram: price on vertical axis, quantity on horizontal axis, with demand curves D1 and D2 and supply curve S1; equilibrium X at intersection of D1 and S1, equilibrium Y at intersection of D2 and S1] What could not have caused the market equilibrium position to have changed from X to Y?

1. Aincreasing the availability of loans for buying houses
2. Bgranting a subsidy for producers of bricks
3. Cremoving sales tax on electric switches
4. Dremoving tariffs on imports of wood

As printed in the paper