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GOODMAN

Can someone show me how to do this? Find the inverse of {(3, 2), (4,2)} and tell whether its a function.

  • 2 years ago
  • 2 years ago

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  1. Mertsj
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    Just reverse the x and y values in the ordered pairs. Then check if any of the ordered pairs have the same first number. If they do, it's not a function.

    • 2 years ago
  2. GOODMAN
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    so all you need to do is reverse x and y? what will happen if you have 3 ordered pairs? would you do the same?

    • 2 years ago
  3. Mertsj
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    Yep. You would do the same. Is the inverse a function or not?

    • 2 years ago
  4. GOODMAN
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    yea..i dont know how to determine whether its a function or not..do you mind explaining?

    • 2 years ago
  5. Mertsj
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    Did you read what I wrote in my first post?

    • 2 years ago
  6. GOODMAN
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    OHHHH...OKAY i understand..so its not a fucntion

    • 2 years ago
  7. Mertsj
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    Right. The inverse is NOT a function.

    • 2 years ago
  8. Mertsj
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    At least in this case. Sometimes it will be.

    • 2 years ago
  9. GOODMAN
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    because 2 is repeated..

    • 2 years ago
  10. GOODMAN
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    does this rule apply to all functions?

    • 2 years ago
  11. Mertsj
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    Yes. The 2 is paired with more than 1 y value

    • 2 years ago
  12. Mertsj
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    Absolutely. learn these lessons about functions well because you will be involved with functions for as long as you study math.

    • 2 years ago
  13. GOODMAN
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    okay..thanks you really cleared up the functions for me :D

    • 2 years ago
  14. Mertsj
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    yw. isn't learning fun!!!

    • 2 years ago
  15. GOODMAN
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    it sure is!!

    • 2 years ago
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