Solve the System by Substitution $$\begin{array} { l } x + y = - 2 \\x - y = - 8\end{array}$$

question 279

Multiple Choice

Solve the system by substitution.
- $$\begin{array} { l } x + y = - 2 \\x - y = - 8\end{array}$$

• A) \(\varnothing\)
• B) \(\{ ( - 6,4 ) \}\)
• C) \(\{ ( 5,4 ) \}\)
• D) \(\{ ( - 5,3 ) \}\)

---

Definitions:

Scenario Analysis

A process of analyzing possible future events by considering alternative possible outcomes, often used in strategic planning to make flexible long-term plans.

Forecasting Data

The use of historical data and analysis to make informed predictions about future trends, sales, demands, or other metrics.

Scenario Analysis

A method of evaluating potential future occurrences through the exploration of different potential outcomes or situations.

SWOT Analysis

A strategic planning tool used to identify and understand the Strengths, Weaknesses, Opportunities, and Threats related to business competition or project planning.