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I am trying to envision the graphs of the following equations but for some reason or the other I am not able to figure a systematic way of graphing them. I need the most basic procedure to achieve their graphs. The equations are:

  1. $|y|=x$
  2. $y^2=x^2$
  3. $|x|+|y|=1$
  4. $|x+y|=1$

If am not mistaken, non of them are graphs of functions.

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    http://www.wolframalpha.com/2012-12-22
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    @akkkk Interesting as it is, I am looking for more explanation and of course the graphs. Am looking to understand in depth the graphs of the functions.2012-12-22
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    That's not what you asked for.2012-12-22
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    @akkkk My apologies!2012-12-22

3 Answers 3