\documentclass{standalone}
\usepackage{/media/documents/Cours/Prof/Enseignements/tools/style/base}
\usepackage{tkz-fct}
\usepackage{tikz}



\begin{document}

    \begin{tikzpicture}[xscale=0.6, yscale=0.4]
        %\repere{-0.5}{12.9}{-0.5}{15.9} 
        %\draw[red] plot[samples=200,domain=-1:2] function {x**2};
        \tkzInit[xmin=0,xmax=130,
         ymin=0,ymax=400,
         xstep=10,ystep=20]
        \tkzAxeX[thick, poslabel=right,label=]
        \tkzAxeY[thick, poslabel=above,label=]
        \tkzDrawX[label={\textit{Prix d'une visseuse}},below= -12pt]
        \tkzDrawY[label={\textit{Quantité}}, below=-10pt]
        \tkzGrid

        \tkzFct[domain=0:130,color=blue, very thick]{-0.0001*\x*\x + 2.3*\x}
        %\tkzText[above right,color=blue](24,655){$\mathcal{C}_C$}

        \tkzFct[domain=0:130,color=red, very thick]{0.01*\x*\x - 2.6*\x + 350}
        %\tkzText[above ,color=red](24,750){$\mathcal{C}_R$}
    \end{tikzpicture}

\end{document}

