Draw a demand curve and label it D1. On the graph, illustrate an increase in demand and a decrease in demand, and label the curves D2 and D3, respectively. Starting on demand curve D1, explain the shift that would result from each of the following events: an increase in income and the good is a normal good an increase in income and the good is an inferior good a decrease in the price of a substitute good a decrease in the price of a complementary good

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Market Surplus and Shortage Analysis

In everyday language, a “surplus” indicates that there is an excess of something, while a “shortage” means that there is a scarcity of it. In economics, “market surplus” refers to the condition where the quantity of a certain good more available than what is required or “demanded” by the market. In the same way, a “market shortage” refers to the condition where the quantity of a certain good is less available than what is “demanded” by the market. If quantity in demand is written as Qd and quantity that is supplied is written as Qs, then, the condition Qs > Qd indicates market surplus and condition Qd > Qs indicates market shortage.