If both the supply of and the demand for a good change, but you don't have information about which curve shifted the most, then the direction of the change in either price or quantity (but not both) can be predicted.

Question

Quizplus · Accepted Answer

If both the supply and demand curves shift, but the extent of the shifts is unknown, then it is possible to predict the direction of change in either price or quantity, but not both. This is because the equilibrium point will move, but the direction of the movement depends on the relative magnitudes of the shifts in the supply and demand curves.

If Both the Supply of and the Demand for a Good