Verify That the Values of the Variables Listed Are Solutions

question 69

Multiple Choice

Verify that the values of the variables listed are solutions of the system of equations.
- $$\begin{array} { l } \left\{ \begin{array} { c } x + y + z = 6 \\x - y + 4 z = 14 \\5 x + y + z = 26\end{array} \right. \\x = 5 , y = - 1 , z = 2\end{array}$$

• A) not a solution
• B) solution

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Definitions:

Standard Deduction

The standard deduction is a fixed dollar amount subtracted from an individual's income before income tax is calculated, reducing taxable income.

Joint Return

A tax return filed collectively by married couples, combining their incomes, exemptions, and deductions.

Taxable Income

The portion of income that is subject to taxation according to the laws and regulations of the taxing authority.

Standard Deduction

A fixed dollar amount that reduces the income on which you are taxed, varying by filing status and adjusted each year for inflation.