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kandsbbf

  • 3 years ago

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.

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  1. kandsbbf
    • 3 years ago
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  2. kandsbbf
    • 3 years ago
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    @MaeganR

  3. MaeganR
    • 3 years ago
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    Yes?

  4. MaeganR
    • 3 years ago
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    Im not quite sure what you commented me for..?..

  5. kandsbbf
    • 3 years ago
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    could u help me with this please?

  6. MaeganR
    • 3 years ago
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    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. |:

  7. MaeganR
    • 3 years ago
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    Are you trying to see if its a function?

  8. kandsbbf
    • 3 years ago
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    the question is at the very top and the graph of the question is the first comment... yes

  9. Butterfly16
    • 3 years ago
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    Do you have the equation of the function?

  10. MaeganR
    • 3 years ago
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    I would say its not a function from what I know, but you may want to get extra help from @Butterfly16 on this subject.

  11. kandsbbf
    • 3 years ago
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    no alls their is is a graph and a -3 under the graph

  12. Butterfly16
    • 3 years ago
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    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?

  13. kandsbbf
    • 3 years ago
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    so it is a function because it touches all diff spots @Butterfly16

  14. Butterfly16
    • 3 years ago
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    Excellent! :o) So, that can eliminate 2 of our answers.

  15. MaeganR
    • 3 years ago
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    Lol. See, Im not much help. Sorry. ),:

  16. kandsbbf
    • 3 years ago
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    so how do i figure out domain and range?

  17. Butterfly16
    • 3 years ago
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    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?

  18. kandsbbf
    • 3 years ago
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    yes i can

  19. kandsbbf
    • 3 years ago
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    so its b because c says all real numbers?

  20. Butterfly16
    • 3 years ago
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    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)

  21. kandsbbf
    • 3 years ago
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    yess (: when i put anotheer one on here can i tag you?

  22. Butterfly16
    • 3 years ago
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    Of course! :o)

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