Use a Graphing Calculator to Express Solutions with Approximations to the Nearest

question 320

Multiple Choice

Use a graphing calculator to Express solutions with approximations to the nearest thousandth.
- $$\begin{array} { r } 3 x - 2 y - 4 z + 1 = 0 \\9 x - 2 y + 8 z - 4 = 0 \\4 y + 4 z - 3 = 0\end{array}$$

• A)\( \left\{\left(-\frac{1}{3},-\frac{1}{2}, \frac{1}{4}\right)\right\} \)
• B) \(\left\{ \left( - \frac { 1 } { 3 } , \frac { 1 } { 2 } , - \frac { 1 } { 4 } \right) \right\}\)
• C) \(\left\{ \left( \frac { 1 } { 3 } , \frac { 1 } { 2 } , \frac { 1 } { 4 } \right) \right\}\)
• D) \(\varnothing\)

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