documentclass{article}

usepackage{tikz}
usetikzlibrary{shapes, arrows, shadows,trees, decorations.markings, positioning, patterns, plotmarks,
matrix,decorations.pathmorphing,backgrounds,fit,shapes.symbols,chains, 3D, calc}
usepackage{kpfonts}

begin{document}
    begin{tikzpicture}[scale=4]
                draw[->] (0,0,0) -- (1,0,0) node[above]{$x$};
                draw[->] (0,0,0) -- (0,1,0) node[left]{$y$};
                draw[->] (0,0,0) -- (0,0,1) node[left]{$z$};
    end{tikzpicture}

    vspace{5cm}
    begin{tikzpicture}[scale=4]
                draw[->] (0,0,0) -- (1,0,0) node[above]{$y$};
                draw[->] (0,0,0) -- (0,1,0) node[left]{$z$};
                draw[->] (0,0,0) -- (0,0,1) node[left]{$x$};
    end{tikzpicture}

end{document}

documentclass{article}

usepackage{tikz}

tikzstyle{yzx} = [
  x={(-.385cm, -.385cm)},
  y={(1cm, 0cm)},
  z={(0cm, 1cm)},
]

begin{document}
    begin{tikzpicture}[scale=1.5]
        draw[->] (0,0,0) -- (1,0,0) node[above]{$x$};
        draw[->] (0,0,0) -- (0,1,0) node[left]{$y$};
        draw[->] (0,0,0) -- (0,0,1) node[left]{$z$};
    end{tikzpicture}

    vspace{.5cm}
    begin{tikzpicture}[yzx, scale=1.5]
        draw[->] (0,0,0) -- (1,0,0) node[left]{$x$};
        draw[->] (0,0,0) -- (0,1,0) node[above]{$y$};
        draw[->] (0,0,0) -- (0,0,1) node[left]{$z$};
    end{tikzpicture}
end{document}