annalewin
annalewin annalewin
  • 21-10-2014
  • Mathematics
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How do you know when to put an open or closed circle when graphing inequalities?

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KBreithaupt KBreithaupt
  • 21-10-2014
An open circle means not equal to. So, if your equation is x < 4, You would put an OPEN circle at four because it can't equal four.
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