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

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) $\varnothing$