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blackstreet23

  • one year ago

6. Given the relation below. To be a function, x cannot be what values? (4 Pts) { (18, 13), (-17, 25), (35, 101), (x ,25) }

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  1. texaschic101
    • one year ago
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    A function will not have 2 x values that are the same..they can have repeating y values, but no repeating x values. Now all your points are set up like this (x,y) your x values are : 18,-17,35....to be a function, x cannot be any of these make sense ? Or did I totally just confuse the crap out of you ?

  2. blackstreet23
    • one year ago
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    no it makes sense

  3. blackstreet23
    • one year ago
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    but what about -17 ? it will still be the same coordinate

  4. blackstreet23
    • one year ago
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    @jim_thompson5910

  5. jim_thompson5910
    • one year ago
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    So you're given this relation `{ (18, 13), (-17, 25), (35, 101), (x ,25) } ` and I'm guessing you're also given a list of answer choices?

  6. blackstreet23
    • one year ago
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    no

  7. texaschic101
    • one year ago
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    x cannot be any of the x values that you already have because x cannot be repeated to be a function.

  8. jim_thompson5910
    • one year ago
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    ok so you'll just list out the values texaschic101 listed if x were any of those values, you'd have a repeated x which makes you fail the vertical line test. Each input must generate exactly one output. If you had an input producing 2 outputs, which output would you ultimately go with? example: convert 20 celsius to F. If the output was 68 F and 100 F, which is the true output? There can only be one output for this to be a function (that's useful)

  9. texaschic101
    • one year ago
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    nice explaining :)

  10. jim_thompson5910
    • one year ago
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    oh wait, I see what you mean now if x = -17, then (x ,25) turns into (-17 ,25) which is already listed as the second ordered pair

  11. jim_thompson5910
    • one year ago
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    so x = -17 doesn't run into the same issue as x = 18 does

  12. blackstreet23
    • one year ago
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    so -17 is not on the list of the ones i cannot use?

  13. blackstreet23
    • one year ago
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    @jim_thompson5910

  14. blackstreet23
    • one year ago
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    @aaronq

  15. jim_thompson5910
    • one year ago
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    yeah x = -17 is allowed

  16. blackstreet23
    • one year ago
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    ohh ok thanks !

  17. jim_thompson5910
    • one year ago
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    no problem

  18. blackstreet23
    • one year ago
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    i have another problem. I will link you to it

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