Perfectly elastic / inelastic supply curves

IB Economics: Perfectly elastic / inelastic supply curves

This is a continuation of PES theory and looks at the most extreme types of supply elasticity - perfectly elastic and perfectly inelastic supply. Perfectly inelastic supply is the easier of the two to explain. Why not start your class with a simple question, asking your students if they can think of any examples of either. A further advantage of starting your lesson off with this question is that it may incite a response...

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