W3 Tutorial - Demand and Supply 1. Explain the law of demand. How is a market demand curve derived from individual demand curves? 2. What are the determinants of demand? Distinguish between a change in demand and a movement along a fixed demand curve, noting the cause(s) of each. 3. Explain the law of supply. How is the market supply curve derived from the supply curves of individual producers? 4. What are the determinants of supply? Distinguish between a change in supply and a change in the quantity supplied, noting the cause(s) of each