Labels are wrong

\documentclass{standalone}
\usepackage{tikz,pgfplots}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
    legend entries={$700x$,$1050-500(x-1.5)$},
    legend style={anchor=north east},
    scale only axis,
    width=11cm,
    grid=major,
    grid style={dashed, gray!30},
    axis lines=middle,
    inner axis line style={-stealth},
    xlabel={\large $x$},
    ylabel={\large $y$},
    ylabel style={anchor=north east},
    yticklabel style={inner ysep=0pt, anchor=south east},
    ytick={0,100,...,1100},
    xticklabel style={inner xsep=0pt, anchor=north west},
    xtick={0,0.5,...,5},
    xscale=1.25,
    ymin=-100,
    ymax=1125,
    xmin=-.25,
    xmax=4.25,]

\addplot[color=red,very thick,samples=200,domain=0:1.5] {x*700};
\addplot[color=blue,very thick,samples=200,domain=1.5:3.60] {1050-(x-1.5)*500};
\end{axis}
\end{tikzpicture}
\end{document}