Untitled

\begin{array}{c}
\begin{tikzpicture}
\draw[->] (-1,0) -- (5,0) node[right] {$X$};
\draw[->] (0,-1) -- (0,5) node[above] {$Y$};
\draw[thick] (-0.5, -0.5) -- (4, 13) node[right] {$Y = 3X + 1$};
\foreach \y in {1,2,...,4} \draw (0,\y) -- (0.1,\y) node[left] {\y};
\foreach \x in {1,2,...,4} \draw (\x,0) -- (\x,0.1) node[below] {\x};
\end{tikzpicture}
\end{array}