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anonymous

  • 5 years ago

Determine whether the following relation is a function. |9x| = |7y| I say no?

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  1. anonymous
    • 5 years ago
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    of course it is a function.

  2. anonymous
    • 5 years ago
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    |9x|-|7y| = 0

  3. anonymous
    • 5 years ago
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    Lol dhat do you know the definition of a function?

  4. anonymous
    • 5 years ago
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    whoops my mistake. it is a line on a graph.

  5. anonymous
    • 5 years ago
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    or lines on a graph.

  6. anonymous
    • 5 years ago
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    Lines on graphs can be functions. And it isn't a line on a graph. Try again. (it is not a function)

  7. anonymous
    • 5 years ago
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    Yes, well done - values are all mapped to two positions -> not a function.

  8. anonymous
    • 5 years ago
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    can anyone help me?

  9. anonymous
    • 5 years ago
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    you are right.

  10. anonymous
    • 5 years ago
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    I meant lines on a graph where x and y are independent of each other.

  11. anonymous
    • 5 years ago
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    yes bkclingan85 post your problem on message board.

  12. anonymous
    • 5 years ago
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    wait how is this not a function? if you divide by 7 (to get the values you x to equal y by itself) then you get the absolute value of 9/7 x equals the absolute value of y. that means that its just and absolute value graph which IS a function

  13. anonymous
    • 5 years ago
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    http://en.wikipedia.org/wiki/Function_(mathematics)

  14. anonymous
    • 5 years ago
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    No, as newton said, for x = say 7, both y= +9 and y = -9 solve the equation. thus, one value of x maps onto two values of y. Therefore this is not a function.

  15. anonymous
    • 5 years ago
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    since, with an input value, x, we cannot determine the output, y, this is not a function.

  16. anonymous
    • 5 years ago
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    oh i see now

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