\documentclass[border=10pt]{standalone}\usepackage[inline]{asymptote}\begin{document}\begin{asy}settings.render=0;unitsize(1cm);import three;draw(Label("$x$",EndPoint,align=SW),O--2.5X,Arrow3);draw(Label("$y$",EndPoint),O--4Y,Arrow3);draw(Label("$z$",EndPoint),O--3Z,Arrow3);triple A=(1,sqrt(3),0), B=2Z;path3 p=plane(A,B);draw(surface(p),magenta+opacity(.2));draw(p,magenta+.6pt);label("$x\sqrt{3} -y =0$",A+B,NE,magenta);draw(Label(scale(.6)*"$1$",EndPoint,align=NW,black),A--(A.x,0,0),gray+dashed);draw(Label(scale(.6)*"$\sqrt{3}$",EndPoint,align=.4dir(60),black),A--(0,A.y,0),gray+dashed);\end{asy}\end{document}
Source: TeX.SE
Author: Black Mild (License)