Which One of the Following Is the Constant Matrix for the Following

question 38

Multiple Choice

Which one of the following is the constant matrix for the following systems of equations? $\left\{\begin{array}{r}4 x-9 y+3 z=8 \\4 x+2 z=3 \\7 y=7\end{array}\right.$

• A) \(\left[\begin{array}{ccc} 4 & -9 & 3 \\ 4 & 0 & 2 \\ 0 & 7 & 0 \end{array}\right]\)
• B) \(\left[\begin{array}{lll} 8 & 3 & 7 \end{array}\right]\)
• C) \(\left[\begin{array}{l} 8 \\ 3 \\ 7 \end{array}\right]\)
• D) \(\left[\begin{array}{l} x \\ y \\ z \end{array}\right]\)

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Definitions:

Monthly Consumption

The total amount of goods and services that consumers purchase and use within a month.

Monthly Income

The total earnings received by an individual or entity on a monthly basis, from sources such as employment, investments, and other income.

Income Elasticity of Demand

Indicates how the quantity demanded of a good changes in response to a change in consumers' income.

Monthly Income

The total amount of earnings received every month from work, investments, benefits, and other sources.