anonymous
  • anonymous
help with functions?
Precalculus
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
what do you need help on exactly?
anonymous
  • anonymous
{(7,5),(-6,0),(2,3)} {(7,5),(-6,0),(-6,-2), (2,3)} {7,-6,2,-7} {(7,5), (-6,0),(7,3)} which one of these are a function? and how?
anonymous
  • anonymous
ok first of all there is a rule that the domain (x) cannot be repeated (ex: #2)

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anonymous
  • anonymous
you mean the -6?
anonymous
  • anonymous
yup
anonymous
  • anonymous
do you see how it is repeated in the domain?
anonymous
  • anonymous
ok so that is not the function? and yes the x
anonymous
  • anonymous
yup you're right
anonymous
  • anonymous
ok i see that one
anonymous
  • anonymous
so can you cancel out any others? from knowing that?
anonymous
  • anonymous
umm the last one
anonymous
  • anonymous
yup!
anonymous
  • anonymous
so the first one is it? the function?
anonymous
  • anonymous
well i have a question is the second one 2 separate pairs or is it one whole one?
anonymous
  • anonymous
my guess would be the whole one
anonymous
  • anonymous
does that make sense?
anonymous
  • anonymous
yeah i guess because when you go back and look at it that is the only one that makes sense :)
anonymous
  • anonymous
lol thats true! thank you!
anonymous
  • anonymous
no problem just glad to help :)

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