What term describes the graphical illustration of the supply relationship?

The term that describes the graphical illustration of the supply relationship is known as the supply curve. This curve visually represents how the quantity supplied of a good or service changes in response to different price levels, illustrating the positive relationship between price and quantity supplied. As prices increase, producers are willing to supply more of the product, indicating that higher prices incentivize greater production.

In contrast to the supply curve, other options describe different concepts. The demand curve represents consumer behavior and the quantity of a product demanded at various prices, not the supply side. The supply function refers to the mathematical representation of the supply relationship rather than its graphical form. The market equilibrium curve, while it shows the where supply meets demand, is not specifically focused on supply alone. Therefore, the supply curve is uniquely defined to illustrate the supply relationship graphically.