Systems of Linear Equations in Three Variables
1 Verify the Solution

question 260

Multiple Choice

Systems of Linear Equations in Three Variables
1 Verify the Solution of a System of Linear Equations in Three Variables
- $$\begin{array} { l } ( - 1 , - 3,5 ) \\x - y + z = 7 \\x + y + z = 1 \\x + y - z = - 9\end{array}$$

• A) solution
• B) not a solution

---

Definitions:

High Standards

High standards refer to the practice of setting lofty goals or criteria for oneself or others, often manifesting in expectations of excellence and superior performance.

Freud

Renowned early 20th-century psychologist known for developing psychoanalytic theory which emphasizes unconscious motivations and childhood experiences.

Preconscious

Part of the mind that contains information not currently in consciousness but can be readily brought to consciousness when necessary.

Subconscious

Refers to the part of the mind that is not currently in focal awareness but influences thoughts, feelings, and behaviors.