Solve the System, If Possible $\left\{ \begin{array} { l } x + y = - 9 \\y + z = - 15 \\2 x - z = 7\end{array} \right.$

question 216

Multiple Choice

Solve the system, if possible. $\left\{ \begin{array} { l } x + y = - 9 \\y + z = - 15 \\2 x - z = 7\end{array} \right.$

• A)x = -9, y = 12, z = 5
• B)x = 1, y = -10, z = -5
• C)x = -1, y = 10, z = 5
• D)x = -9, y = 1, z = 5
• E)no solution; inconsistent system

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Definitions:

Demand Curve

A graph showing the relationship between the price of a good and the quantity of that good that consumers are willing to purchase.

Elasticity

A measure of how much the quantity demanded or supplied of a good changes in response to a change in its price, income levels, or other factors.

Perfectly Inelastic

A situation where demand or supply does not change in response to a change in price.

Demand Curve

A graph showing the relationship between the price of a good and the quantity of that good that consumers are willing and able to purchase at different prices.