Solve the System by Using the Gauss-Jordan Method $$\begin{aligned}- 3 x + y & = - 9 \\- 9 x + 3 y & = 4\end{aligned}$$

question 14

Multiple Choice

Solve the system by using the Gauss-Jordan method.
$$\begin{aligned}- 3 x + y & = - 9 \\- 9 x + 3 y & = 4\end{aligned}$$

• A) \(( 1 , - 6 )\)
• B) \(( 0 , - 9 )\)
• C) No solution; inconsistent system
• D) Infinitely many solutions; \(\{ ( x , y ) \mid y = 3 x - 9 \}\); dependent system

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Definitions:

Facial Expression

The visual communication of emotion, intention, or social information through movements or positions of the muscles beneath the skin of the face.

Schachter And Singer

Psychologists known for their development of the two-factor theory of emotion, emphasizing the role of cognitive labels in the experience of emotion.

Emotion-Arousing Situation

Any event or circumstance that triggers an emotional response in individuals.

Facial Expression

Movements of the facial muscles that communicate emotions or reactions and are a significant aspect of non-verbal communication.