I tried to find out a way to calculate the graph for multivariable modulus functions(eg. $|x|+|y|=1+x$)
in this case made a table to find out all possible cases like:
|$y$/$x$||$x > 0$||$x < 0$|
|$y > 0$||$y = x$||$y = 0$|
|$y < 0$||$x = 0$||$R$|
On graphing this equation it gives .
I would like to know where i went wrong in this method and is there any better method to draw the graph by hand.