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Equations describing a shaded region (inequalities)

  • #1

Homework Statement


cHFof.jpg

Question 42 in particular.

Homework Equations


No idea.


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.
 

Answers and Replies

  • #2
HallsofIvy
Science Advisor
Homework Helper
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Do you know how to distinguish equations of straight lines from equation of curves?
 

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