Assess students' basic understanding of how supply and demand interact to determine market equilibrium by testing definitions of price, quantity demanded, and quantity supplied; the laws of demand and supply; the difference between movements along curves and shifts of curves; reading a simple supply-and-demand graph to identify equilibrium price and quantity; and predicting direction of change in price and quantity after a single supply or demand shift. Suitable for introductory high school (grades 9–12) recall and simple interpretation tasks.