Calculation of PED using the formula and interpreting the significance of the result. Drawing and interpretation of demand curve diagrams to show different PED. The key influences on whether demand is elastic or inelastic. The relationship between PED and total spending on a product/revenue, both in a diagram and as a calculation. The implications for decision making by consumers, producers and government.
Definition, drawing and interpretation of demand and supply schedules and curves used to identify disequilibrium prices and shortages (demand exceeding supply) and surpluses (supply exceeding demand).