An Increase in Quantity Demanded Compared with an Increase in Demand, and an Increase in Supply Compared with an Increase in Quantity Supplied
Panel A: An increase in quantity demanded is a movement along a fixed demand curve caused by a shift in the supply curve.
Panel B: An increase in demand is a shift in the demand curve up and to the right.
Panel C: An increase in supply is a shift in the supply curve down and to the right.
Panel D: An increase in quantity supplied is a movement along a fixed supply curve caused by a shift in the demand curve.