\tdplotsetmaincoords{110}{50}
\begin{tikzpicture}
		[tdplot_main_coords,
			cube/.style={very thick,black},
			grid/.style={very thin,gray},
			axis/.style={->,blue,thick}]

	%draw a grid in the x-y plane
	\foreach \x in {-0.5,0,...,2.5}
		\foreach \y in {-0.5,0,...,2.5}
		{
			\draw[grid] (\x,-0.5) -- (\x,2.5);
			\draw[grid] (-0.5,\y) -- (2.5,\y);
		}


	%draw the axes
	\draw[axis] (-1,0,0) -- (3,0,0) node[anchor=west]{$y$};
	\draw[axis] (0,-1,0) -- (0,3,0) node[anchor=west]{$x$};

\end{tikzpicture}