lesson Topic outcome Start Activities Print Page Introduction After you have worked through this this topic, you should be able to: explain and illustrate how the interaction between demand and supply for a good or service determines the price for the good or service in a market We will first unpack the concept "demand" and then "supply". We then show how the interaction between demand and supply determines the price. Post navigation Overview – Demand, Supply and PricesThe Law of Demand as a Schedule