\documentclass[border=3pt]{standalone}% Drawing\usepackage{tikz}% Notation\usepackage{amsmath}\begin{document}\begin{tikzpicture}[line cap=round]% %Grid% \def\length{4}% \draw[thin, dotted] (-\length,-\length) grid (\length,\length);% \foreach \i in {1,...,\length}% {% \node at (\i,-2ex) {\i};% \node at (-\i,-2ex) {-\i};% }% \foreach \i in {1,...,\length}% {% \node at (-2ex,\i) {\i};% \node at (-2ex,-\i) {-\i};% }% \node at (-2ex,-2ex) {0};% Axis\draw[thick, -latex] (-2,0) -- (3.5,0) node[below] {$V$};\draw[thick, -latex] (0,-2ex) -- (0,3.5) node[left] {$I$};% Plot Function\draw[domain=-12:0.5, samples=400, variable=\x, very thick] plot ({0.3*\x+2},{e^(\x*2)});\draw[dashed, line width=0.15mm] (2,1) -- (2,0) node[below] {$V_\text{s}$};\end{tikzpicture}\end{document}