Solve the System of Equations by the Substitution Method $$\begin{array} { l } x - 7 y = - 40 \\4 x - 8 y = - 20\end{array}$$

question 135

Multiple Choice

Solve the system of equations by the substitution method.
- $$\begin{array} { l } x - 7 y = - 40 \\4 x - 8 y = - 20\end{array}$$

• A) \(\{ ( - 9,8 ) \}\)
• B) \(\{ ( 8,8 ) \}\)
• C) \(\{ ( 9,7 ) \}\)
• D) \(\varnothing\)

---

Definitions:

Decisions

The process of making choices among various options based on the analysis and judgment of the situation.

Ethical Obligations

Moral duties or commitments that guide individuals or organizations in their actions and decisions.

Competency

The ability to do something successfully or efficiently, often referring to a specific skill or type of behavior.

Standardization

Standardization is the process of implementing and developing technical standards to ensure consistency, safety, and interoperability of products or methods.