documentclass[tikz]{standalone}
usepackage{tkz-fct}
begin{document}
begin{tikzpicture}[>=stealth']
tkzInit[xmin=-15,xmax=25,
         ymin=-250,ymax=50,
         xstep=5,ystep=50]
tkzAxeXY
tkzFct[domain=-10:24,color=blue,very thick,<->]{14*x-x**2}
end{tikzpicture}
end{document}

pdflatex -shell-escape filename.tex

Package pgf Warning: Plot data file `filename.tkzfct.table' not found. on input line 32.