Solve the System of Equations by the Elimination Method $$\left\{ \begin{aligned}7 x + y & = 3 \\3 y & = 9 - 21 x\end{aligned} \right.$$

question 3

Multiple Choice

Solve the system of equations by the elimination method.
- $$\left\{ \begin{aligned}7 x + y & = 3 \\3 y & = 9 - 21 x\end{aligned} \right.$$

• A) \(\left( \frac { 3 } { 7 } , 0 \right)\)
• B) \(( 0,3 )\)
• C) \(\{ ( x , y ) \mid 7 x + y = 3 \}\)
• D) \(\varnothing\)

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Definitions:

Alternative Solutions

Different options or strategies that can be used to address or solve a problem, typically considered during decision-making processes.

Solution Implementation

The process of putting a plan or solution into action in order to solve a problem.

Decision Making

The cognitive process of selecting a course of action from among multiple alternatives.

Functional Fixity

A cognitive bias that limits a person to using an object only in the way it is traditionally used, hindering problem-solving and creativity.