Final answer:
An increase in supply means the supply curve shifts to the right, indicating that more quantity is supplied at every price level.
Step-by-step explanation:
When we say in economics that there is an increase in supply, we mean that the supply curve shifts to the right. This shift signifies that at every given price level, the quantity supplied is higher. Factors such as a decrease in costs of production or an increase in a firm's profits can motivate the firm to produce more, thus shifting the supply curve to the right from So to S2, as illustrated in Figure 3.10 for a car example. Therefore, an increased supply is represented by a rightward shift of the supply curve in a graphical representation of the market.