Solve the System by the Method of Your Choice $$\begin{array} { l } x + y = - 2 \\x - y = 19\end{array}$$

question 87

Multiple Choice

Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.
- $$\begin{array} { l } x + y = - 2 \\x - y = 19\end{array}$$

• A) \(\{ ( 8.5 , - 10.5 ) \}\)
• B) \(\{ ( 8.5,10.5 ) \}\)
• C) \(\{ ( x , y ) \mid x + y = - 2 \}\)
• D) \(\varnothing\)

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Definitions:

Shortage

A situation where the demand for a product or service exceeds the supply available at a specified price.

Usury Law

Legislation that sets maximum interest rates that can be charged on loans, to prevent excessive interest.

Market Equilibrium

A market state where the quantity supplied equals the quantity demanded, leading to a balance in price and volume.

Interest Rate

The cost of borrowing money expressed as a percentage of the total amount borrowed.