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) $\varnothing$

Question

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) $\varnothing$

Quizplus · Accepted Answer

Using a graphing calculator to solve the system of equations, the solution is approximately $x = 0.333$, $y = 0.500$, and $z = 0.250$, which corresponds to the solution set $\left\{ \left( \frac { 1 } { 3 } , \frac { 1 } { 2 } , \frac { 1 } { 4 } \right) \right\}$.

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