Verify That the Values of the Variables Listed Are Solutions $$\begin{array} { l } \left\{ \begin{array} { l } x + y = 8 \\x - y = 4\end{array} \right. \\x = 6 , y = 2\end{array}$$

question 90

Multiple Choice

Verify that the values of the variables listed are solutions of the system of equations.
- $$\begin{array} { l } \left\{ \begin{array} { l } x + y = 8 \\x - y = 4\end{array} \right. \\x = 6 , y = 2\end{array}$$

• A) not a solution
• B) solution

---

Definitions:

Revealed Preferences

A concept in economics that studies consumer behavior based on the choices they make, revealing their preferences.

Francs

A former currency of France, which was replaced by the Euro.

Consumption

The act of utilizing economic goods to satisfy needs or desires.

Revealed Preferred

A theory in economics that preferences of consumers can be understood from their purchasing habits and choices, as observed from actual market behavior.