[Math] Using Wolfram Alpha For Solving A System Of Equations

Question

How do i input the below system of equations in wolfram alpha in order to solve for the unknowns and plot them? If i just say "solve" and input these equations one after the other with a simicolen {solve $2x – y +0z = 0$;$-x + 2y -z = -1$;$0x – 3y + 4z = 4$} it simply throws the value of $x$,$y$ and $z$ without showing any steps nor the plot.
I'am Wondering if there's some kind of code that can be written in order to make wolfram alpha understand what i'am talking about.
$$\left.\begin{matrix}
2x – y +0z = 0\\
-x + 2y -z = -1\\
0x – 3y + 4z = 4
\end{matrix}\right\}$$

Answer 1

This seemed to work : solve(2x−y+0z=0,−x+2y−z=−1,0x−3y+4z=4,[x,y,z])