Solve the System by the Method of Your Choice $$\begin{array} { l } y = - 4 x + 9 \\20 x + 5 y = 45\end{array}$$

question 125

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.
- $$\begin{array} { l } y = - 4 x + 9 \\20 x + 5 y = 45\end{array}$$

• A) \(\varnothing\)
• B) \(\{ ( 0,9 ) \}\)
• C) \(\{ ( x , y ) \mid 4 x + y = 9 \}\)
• D) \(\{ ( 0,0 ) \}\)

---

Definitions:

Global Trade

The exchange of goods, services, and capital between countries and territories, overcoming geographical boundaries.

Billion People

A quantity representing a thousand million individuals, often used in demographics to indicate significant portions of the global population.

GDP Growth

The rate at which a country's Gross Domestic Product (GDP) increases over a certain period, reflecting the economic health and prosperity of the nation.

Annual Rate

A percentage rate that represents the amount of interest or growth expected over the course of a year.