A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Given the function f(x) = 4(x+3) – 5, solve for the inverse function when x = 3 –21 –16 –10 –1

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh ok just plug it in and distribute

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    got that?

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    plug what in

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    x

  5. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i did but it didnt give me one of the answers

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1434112167391:dw|

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thats the first step

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay then where do i go

  9. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1434112336418:dw|

  10. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thats the 2nd step

  11. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hold on rewind did it wrong

  12. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1434112506739:dw|

  13. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    is that dividing by 0?!

  14. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    im sorry im having a bad day can you take over for me

  15. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I can try... the problem is asking for the inverse function when x = 3 meaning we need to find \[f^{-1}(x)\] which is the inverse before we go further

  16. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    first we can distribute and make this a bit easier f(x) = 4(x+3)-5 f(x) = 4x+12-5 f(x) = 4x+7

  17. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now f(x) =y y = 4x+7 we switch the x and y x=4y+7 and solve for y \[x=4y+7\] \[x-7 = 4y\] \[\frac{x}{4}-\frac{7}{4} = y\]

  18. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now we are given that x = 3 so we plug it in \[\frac{3}{4} -\frac{7}{4} = y\]

  19. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    we can subtract the numerator since we have 4 as the same denominator

  20. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\frac{-4}{4} = y\] \[-1=y\]

  21. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thank you

  22. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.