• The theory of demand describes how a change in the quantity of a good or service that consumers will require affects its price in the market,

  • The theory states that the higher the price of a product, other things being equal, the less demand will be for it, which implies a downward slope of the demand curve.
  • Similarly, the higher the demand, the higher the price of a given offer.
  • Demand theory focuses on demand in the relationship between supply and demand.