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Knockknock

  • one year ago

Consider the function represented by the equation 1/2j+1/4k=3.Which shows the equation written in function notation with j as the independent variable

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  1. anonymous
    • one year ago
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    If j is the independent variable, you need to solve the equation for k.

  2. anonymous
    • one year ago
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    Is it just the 2 and 4 in the denominator, or are the j and k there too?

  3. knockknock
    • one year ago
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    I can give you the 4 options for it. F(j)=-2j+12 F(j)=-1/2j+6 F(k)=-2k+12 F(k)=-1/2k+6

  4. anonymous
    • one year ago
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    No, I meant what is the original equation? Which of these?\[\frac{ 1 }{ 2 }j+\frac{ 1 }{ 4 }k=3\]\[\frac{ 1 }{ 2j }+\frac{ 1 }{ 4k }=3\]

  5. knockknock
    • one year ago
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    My mistake it's the first one that you have (I can't write my equations like that for some reason)

  6. knockknock
    • one year ago
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    I just want to know how to start solving it so I can find out the answer

  7. anonymous
    • one year ago
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    Multiply by 4 to clear the fractions

  8. anonymous
    • one year ago
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    because it's the least common denominator

  9. anonymous
    • one year ago
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    |dw:1434732715187:dw|

  10. anonymous
    • one year ago
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    So solve that for k

  11. knockknock
    • one year ago
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    I got j=3/2 k=3 kinda lost on how to do this

  12. anonymous
    • one year ago
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    You're trying to get k by itself on one side of the equation. On the left side you have 2j added to k. So you need to subtract 2j from both sides to get k by itself

  13. knockknock
    • one year ago
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    Ohh okay now I have k=-2j+3

  14. anonymous
    • one year ago
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    right

  15. anonymous
    • one year ago
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    and to put it in function notation, just write k as k(j)

  16. knockknock
    • one year ago
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    Okay thanks :)

  17. anonymous
    • one year ago
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    actually you forgot to multiply the 4 and 3 on the right, so -2j+12

  18. anonymous
    • one year ago
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    @Knockknock

  19. knockknock
    • one year ago
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    Okay

  20. knockknock
    • one year ago
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    And j is the independent variable so would that mean it's -2j or -2k

  21. knockknock
    • one year ago
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    @peachpi

  22. anonymous
    • one year ago
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    it's -2j. k = f(j) = -2j +12

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