Solve the System by Substitution

question 65

Multiple Choice

Solve the system by substitution. Substitute the expression in the second equation into the first equation and solve. If the lines coincide, answer dependent . If the lines are parallel, answer no solution .

---

Definitions:

Excess Demand

A situation where the quantity demanded of a good exceeds the quantity supplied at a particular price, leading to a shortage.

Supply Function

A mathematical function that illustrates the quantity of a good that producers are willing and able to sell at different price levels.

Demand Function

A mathematical expression showing the relationship between the quantity demanded of a good and its price, along with other determinants of demand like income.

Quantity Tax

A tax levied on the quantity of goods sold, not on the value of sales.