Solve Each System of Equations Using Matrices (Row Operations) $$\left\{ \begin{array} { r } - 2 x - 8 y = - 8 \\4 x + 16 y = 3\end{array} \right.$$

question 154

Multiple Choice

Solve each system of equations using matrices (row operations) . If the system has no solution, say that it is inconsistent.
- $$\left\{ \begin{array} { r } - 2 x - 8 y = - 8 \\4 x + 16 y = 3\end{array} \right.$$

• A) \(x = - 8 , y = 3\)
• B) \(x = - 2 , y = 3\)
• C) \(x = - 2 , y = - 2\)
• D) Inconsistent

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Definitions:

REM Sleep

A phase of sleep characterized by rapid eye movement, during which vivid dreams commonly occur.

NREM Sleep

Non-Rapid Eye Movement sleep, characterized by slower brain waves, minimal dreaming, and deep physical relaxation; constitutes the majority of sleep time.

N2 Sleep

A stage of non-REM sleep characterized by sleep spindles and K-complexes, representing a deeper sleep than N1 and precedes the even deeper N3 sleep stage.

N1 Sleep

N1 sleep, or stage 1 sleep, is the initial phase of the sleep cycle, characterized as the transition from wakefulness to sleep, marked by reduced muscle activity, slowed breathing, and heart rate, and is typically brief.