anonymous
  • anonymous
Find the domain and range of the relation and determine whether it is a function. Domain: positive integers; range: positive integers; no, it is not a function. Domain: x > 3; range: y > 0; yes, it is a function. Domain: all real numbers; range: all real numbers; yes, it is a function. Domain: x ³ 0; range: y > 3; no, it is not a function.
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
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anonymous
  • anonymous
@MaeganR
MaeganR
  • MaeganR
Yes?

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MaeganR
  • MaeganR
Im not quite sure what you commented me for..?..
anonymous
  • anonymous
could u help me with this please?
MaeganR
  • MaeganR
What is the question? And Im not quite sure.. Im just now actually understanding the slope stuff. Ill try though. Actually @Butterfly16 and @zaynahf might know this. They've been helping me out a LOT lately and I'm sure they could try to help you also. Ill look at it and try to see if I can do it, but I don't really think I can. |:
MaeganR
  • MaeganR
Are you trying to see if its a function?
anonymous
  • anonymous
the question is at the very top and the graph of the question is the first comment... yes
anonymous
  • anonymous
Do you have the equation of the function?
MaeganR
  • MaeganR
I would say its not a function from what I know, but you may want to get extra help from @Butterfly16 on this subject.
anonymous
  • anonymous
no alls their is is a graph and a -3 under the graph
anonymous
  • anonymous
Well, we know that a function is when there are no x values that are the same. You can use the vertical line test to see if its a function. Hold your finger or a pencil up to the graph holding in vertical. and go left to right. if it touches in more than one spot than it isnt a function. Can you figure out if its a function or not?
anonymous
  • anonymous
so it is a function because it touches all diff spots @Butterfly16
anonymous
  • anonymous
Excellent! :o) So, that can eliminate 2 of our answers.
MaeganR
  • MaeganR
Lol. See, Im not much help. Sorry. ),:
anonymous
  • anonymous
so how do i figure out domain and range?
anonymous
  • anonymous
Well, you see that dotted line? It's telling you that the graph doesn't go past that point. So, you can assume that the x value never goes below what number?
anonymous
  • anonymous
yes i can
anonymous
  • anonymous
so its b because c says all real numbers?
anonymous
  • anonymous
I'd think it's b as well. If you look, the x value never goes below 3. Which means x is never going to be 2, 1, 0, -1, -2, etc. And y is never going to be 0 or below, which is how the graph is staying in the all positive quadrant. Does that make sense? :o)
anonymous
  • anonymous
yess (: when i put anotheer one on here can i tag you?
anonymous
  • anonymous
Of course! :o)

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