% !TeX TXS-program:compile = txs:///pdflatex

\documentclass[margin=5mm]{standalone}
\usepackage{ProfLycee}

\begin{document}

\begin{tikzpicture}[x=0.75cm,y=0.75cm,xmin=-2,xmax=4,xgrille=1,xgrilles=0.5,ymin=-3,ymax=3,ygrille=1,ygrilles=0.5,baseline=(current bounding box.north)]
	\tikzset{courbe/.style={line width=1pt,red,samples=250}}
	%grilles & axes
	\GrilleTikz \AxesTikz[ElargirOx=0/0,ElargirOy=0/0]
	\AxexTikz[AffGrad=false]{-2,-1,...,4}
	\AxeyTikz[AffGrad=false]{-2,-1,...,2}
	\draw (0,0) node[below left=2pt,font=\scriptsize] {0} ;
	\draw (1,0) node[below=4pt,font=\scriptsize] {1} ;
	\draw (0,1) node[left=4pt,font=\scriptsize] {1} ;
	\clip (\xmin,\ymin) rectangle (\xmax,\ymax) ; %on restreint les fonctions à la fenêtre
	\draw[very thick,red,domain=\xmin:\xmax,samples=2] plot (\x,{\x-1}) ;
\end{tikzpicture}

\end{document}