Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

gjhfdfg

  • one year ago

Finding inverses to the one-to-one functions,

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

    This is what I'm working on, |dw:1361136194386:dw|

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

    I thought it was 7/2x-5 but I was wrong

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

    -7/-2x-5? just a guess. I'm not sure.

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

    There arent any -7's in it

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

    well I know, but -7 is the opposite of 7. There aren't any -5s in it either. That looks like a +5 up there.

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

    Hmm

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

    I don't think it necessarily wants the opposite of everything

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

    switch x and y and solve for y for the inverse of a function. \[x = \frac{ 2y+5 }{ 7}\]

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

    \[y = \frac{2x + 5}{7}\] To get the inverse, solve for x, then swap x and y \[y = \frac{2x + 5}{7}\] \[7y - 5 = 2x\] \[x = \frac{7y - 5}{2}\] So the inverse function is \[f^{-1}(x) = \frac{7x - 5}{2}\]

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

    ^ he's right :P

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

    Got it thanks. ^^

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

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

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.