anonymous
  • anonymous
domain and range of y=.5x-3?
Mathematics
katieb
  • katieb
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RagingSquirrel
  • RagingSquirrel
Domain: possible x values Range: possible y values
anonymous
  • anonymous
so the domain is all real numbers?
RagingSquirrel
  • RagingSquirrel
Yep! You set your answer up like this: {xIx=R(the symbol for real numbers)}

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anonymous
  • anonymous
wait what?
anonymous
  • anonymous
so like (∞,∞) or something?
RagingSquirrel
  • RagingSquirrel
My math teacher makes me do it like this. It's good practice if you aren't already doing it. |dw:1443151147735:dw| It stands for The set of all X such that X is equal to all real numbers It's kind of connfusing. Basically all you're doing is putting brackets around your answer and an xI in front of it.
RagingSquirrel
  • RagingSquirrel
That's set builder notation. Is it asking for interval notation?
anonymous
  • anonymous
yes
RagingSquirrel
  • RagingSquirrel
Yeah, interval notation would be the brackets. So (∞,∞) is right.
anonymous
  • anonymous
and the range would be the same?

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