Solve the System of Equations $$\begin{array}{l}-3 x+y+6 z=-7 \\7 x+3 y+4 z=-14\end{array}$$

question 20

Multiple Choice

Solve the system of equations. Let z be the parameter.
- $$\begin{array}{l}-3 x+y+6 z=-7 \\7 x+3 y+4 z=-14\end{array}$$

• A) \( (7+14 z,-91+7 z, z) \)
• B) \( \left(\frac{7}{16}+\frac{7}{8} z,-\frac{91}{16}-\frac{27}{8} z, z\right) \)
• C) \( \left(\frac{7}{16}+\frac{7}{8} z,-7+6 z, z\right) \)
• D) \( \left(\frac{7}{16}+\frac{7}{8} z,-7-6 z, z\right\} \)

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Persistent Depressive Disorder

Mood disorder, characterized by mildly or moderately depressed moods, that persists for at least two years.

Psychologists

Professionals trained in the study of the mind and behavior, who apply psychological research and techniques in various settings.

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An emotion characterized by feelings of unhappiness and low spirits, often as a response to loss or disappointment.

Persistent Depressive Disorder

A long-term form of depression characterized by a persistent low mood and other depressive symptoms.