Solve the System $$\begin{array} { l } x - y + z = 1 \\x + y + z = 3 \\x + y - z = - 3\end{array}$$

question 70

Multiple Choice

Solve the system.
- $$\begin{array} { l } x - y + z = 1 \\x + y + z = 3 \\x + y - z = - 3\end{array}$$

• A) \(\{ ( 3 , - 1,1 ) \}\)
• B) \(\varnothing\)
• C) \(\{ ( - 1,1,3 ) \}\)
• D) \(\{ ( - 1,3,1 ) \}\)

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Definitions:

Blood Pressure

is the force exerted by circulating blood upon the walls of blood vessels, often measured for diagnosis since it is closely related to the heart's ability to pump blood.

Digestive Tract

The series of hollow organs joined in a long, twisting tube from the mouth to the anus where food is processed into nutrients.

Local Reflex

Reflex of the intramural plexus of the digestive tract that does not involve the brain or spinal cord.

CNS

The central nervous system, consisting of the brain and spinal cord, coordinates body activities.