how to fix this cartesian plane with tikzpicture?

by ryuk   Last Updated November 09, 2018 00:23 AM

I would like to modify this Cartesian plane, by drawing the vertical line x = -2 and adding the 0 and the lines as in the figure, but I can not fix them. Could you kindly help me?

enter image description here

\documentclass[margin=20pt]{standalone}
\usepackage{tikz}
\usepackage{pgfplots} %%%%%



     \usepackage{lxfonts}

\begin{document}
\begin{tikzpicture}[
  dot/.style={
    circle,fill,draw,minimum size=2mm,inner sep=0
  }]



\begin{axis}[
    axis equal image,
    max space between ticks=20, % This is one way of getting a tick for every integer
    ticklabel style={font=\scriptsize},
    axis lines = middle,
    xmin=-5.5, xmax=5.5, % The range over which the x axis is drawn
    ymin=-4.5, ymax=6.0, % The range over which the y axis is drawn
    domain=-6:5.5,         % The range over which the function is evaluated
    grid=both, 
    xlabel=$x$, ylabel=$y$     
]



 \addplot [very thick, blue, smooth] {-(0)*x+1};

\coordinate [label=above right:$0$] t (0.0,0.0);
\draw [color=black,fill=black,fill opacity=1.0] (a) circle (0.15cm);



 \coordinate [label=above right:$y=1$] at (-4.0,2.0);


  \coordinate [label=above right:$x=-2$] at (-4.0,-3.0);

\end{axis}



\end{tikzpicture}



\end{document}
Tags : tikz-pgf


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