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larrissia

  • 3 years ago

Determine whether the formula describes Y as a function of X: y=9x+1

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  1. S0fw0N
    • 3 years ago
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    |dw:1356561194081:dw|

  2. larrissia
    • 3 years ago
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    I don't understand?

  3. S0fw0N
    • 3 years ago
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    if every (x) has 1 (y) then (y) is a function of (x)

  4. S0fw0N
    • 3 years ago
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    now if every (x) has 2 (y) s then (y) is not a function of (x) (x) is a function of (y)

  5. S0fw0N
    • 3 years ago
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    |dw:1356561453642:dw|

  6. S0fw0N
    • 3 years ago
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    |dw:1356561580944:dw|

  7. S0fw0N
    • 3 years ago
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    did u get it @larrissia

  8. seidi.yamauti
    • 3 years ago
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    S0fw0N is waiting for you to give the real answer. So he/she just explained how it works!

  9. seidi.yamauti
    • 3 years ago
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    You need to see if the formula is injective.

  10. seidi.yamauti
    • 3 years ago
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    (if you plot the function, there must be just one y for each x, but there can be two or more x for an y value)

  11. dpaInc
    • 3 years ago
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    in plain english, for any ONE x value, will you have only ONE y value?

  12. jefftheloveableguy
    • 3 years ago
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    Yes for example if at (2,4). The point (2,7) would not make it a function because it does not pass the vertical line test.

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