Apply Gaussian Elimination to Systems Without Unique Solutions
Use Gaussian $$\begin{array} { r } 4 x - y + 3 z = 12 \\x + 4 y + 6 z = - 32 \\5 x + 3 y + 9 z = 20\end{array}$$

question 15

Multiple Choice

Apply Gaussian Elimination to Systems Without Unique Solutions
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists.
- $$\begin{array} { r } 4 x - y + 3 z = 12 \\x + 4 y + 6 z = - 32 \\5 x + 3 y + 9 z = 20\end{array}$$

• A) \(\varnothing\)
• B) \(\{ ( 2 , - 7 , - 1 ) \}\)
• C) \(\{ ( 8 , - 7 , - 2 ) \}\)
• D) \(\{ ( - 8 , - 7,9 ) \}\)

---

Definitions:

Cardiac Cycle

The sequence of events that occur in the heart during one complete heartbeat, encompassing both diastole and systole phases.

Left Atrium

One of the four chambers of the heart, which receives oxygenated blood from the lungs.

Ventricle

One of the two lower chambers of the heart that receive blood from the atria and pump it out to the lungs or the rest of the body.

Cardiac Cycle

The series of events that occur from the beginning of one heartbeat to the beginning of the next, including systole (contraction of the heart muscle) and diastole (relaxation of the heart muscle).