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Homework Help: Equations describing a shaded region (inequalities)

  1. Sep 14, 2012 #1
    1. The problem statement, all variables and given/known data
    Question 42 in particular.

    2. Relevant equations
    No idea.

    3. The attempt at a solution
    The graph depicts an inequality of sorts, like y >= x and y >= -x as well as y <= x and y <= -x. Beyond these basic deductions (which are probably wrong also), I've not a scintilla of clue what to do next.
  2. jcsd
  3. Sep 14, 2012 #2


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    Science Advisor

    Do you know how to distinguish equations of straight lines from equation of curves?
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