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anonymous

  • one year ago

Which of the following statements have the same result? Explain each step in solving each one. I. f(2) when f(x) = 3x + 2 2. f^-1(3) when f(x) = 2 x minus 7, all over 3 3. 2y + 14 = 4y - 2

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  1. horsegirl27
    • one year ago
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    Okay, so let's start with 1. Replace 2 for x in f(x)=3x+2

  2. anonymous
    • one year ago
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    that would be 8

  3. anonymous
    • one year ago
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    and the second one you would do the inverse by making x y and solving for x

  4. horsegirl27
    • one year ago
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    yup

  5. anonymous
    • one year ago
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    |dw:1433624655272:dw|

  6. anonymous
    • one year ago
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    x=3x+7/2

  7. anonymous
    • one year ago
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    then plug in 3

  8. horsegirl27
    • one year ago
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    yep

  9. anonymous
    • one year ago
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    which would be 8 so even though I have the problem done, how do i do the 3rd one

  10. horsegirl27
    • one year ago
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    Okay, and the third one you have to get y on one side. Do you know how to do that?

  11. anonymous
    • one year ago
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    yeah

  12. horsegirl27
    • one year ago
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    okay, so what do you get once you get y on one side?

  13. anonymous
    • one year ago
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    |dw:1433624850798:dw|

  14. anonymous
    • one year ago
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    so y =8?

  15. anonymous
    • one year ago
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    oh so all 3?

  16. horsegirl27
    • one year ago
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    I guess so, as that's what your work shows. Even if you get it wrong, all your work is supporting your answer so you'll still get credit. But that appears to me to be the correct answer.

  17. anonymous
    • one year ago
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    thanks!

  18. horsegirl27
    • one year ago
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    You're welcome!!

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