\begin{pspicture}(-3,-0.5)(3,3)
%\psgrid(-3,-0.5)(3, 3)
\psaxes[linecolor=blue,ticks=none]{->}(0,0)(-2.5,0)(2.5,2.5)%
\psline[linecolor=red]( -2,2 )(0,0)
\psline[linecolor=red]( 2,2 )(0,0)
\rput[c](2.2,1.5){\color{red}$y=|x|$}

\end{pspicture}