An Augmented Matrix That Represents a System of Linear Equations $\left[ \begin{array} { c c c c } 1&0&0&\vdots& -3 \\0&1&0&\vdots& -9 \\0 & 0 & 1 &\vdots&3\\\end{array} \right]$

question 112

Multiple Choice

An augmented matrix that represents a system of linear equations (in variables x, y, z and w if applicable) has been reduced using Gauss-Jordan elimination.Find the solution represented by the augmented matrix. $\left[ \begin{array} { c c c c } 1&0&0&\vdots& -3 \\0&1&0&\vdots& -9 \\0 & 0 & 1 &\vdots&3\\\end{array} \right]$

• A) (-3, 9, 3)
• B)(3, -9, 3)
• C)(-3, -9, 3)
• D)(-3, -9, -3)
• E)(-3, 3, -9)

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Definitions:

Reaction Time

The interval of time between the presentation of a stimulus and the initiation of the muscular response to that stimulus.

Stimulus Response

A concept in psychology that describes how an individual reacts to a stimulus; it's the basic unit of learning and behavior.

Unconditioned Response

A natural, automatic reaction to a stimulus that occurs without any prior learning or conditioning.

Concrete Operational

A stage in Piaget’s theory of cognitive development where children gain the ability to think logically about concrete events.