Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

dricboylan

What are the vertices of the hyperbola given by the equation (y-4)^2/121 - (x+9)^2/141 = 1?

  • one year ago
  • one year ago

  • This Question is Closed
  1. satellite73
    Best Response
    You've already chosen the best response.
    Medals 1

    first you need the center so you know that one ?

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

    No, I really don't understand this section which is why I was asking for help.

    • one year ago
  3. satellite73
    Best Response
    You've already chosen the best response.
    Medals 1

    center of \[\frac{(y-k)^2}{a^2}-\frac{(x-h)^2}{b^2}=1\]is \((h,k)\)

    • one year ago
  4. satellite73
    Best Response
    You've already chosen the best response.
    Medals 1

    in your case it is \((-9,4)\)

    • one year ago
  5. satellite73
    Best Response
    You've already chosen the best response.
    Medals 1

    because the \(y\) part comes first (before the minus sign) this hyperbola looks like this (roughly) |dw:1353293873616:dw|

    • one year ago
  6. satellite73
    Best Response
    You've already chosen the best response.
    Medals 1

    to find the vertices, go \(a\) units up up and down from the center. that is why you needed the center first in your case \(a^2=121\) and so \(a=11\)

    • one year ago
  7. satellite73
    Best Response
    You've already chosen the best response.
    Medals 1

    since the center is \((-9,4)\) if you go up 11 units you are at \((-9,15)\) and if you go down 11 units you are at \((-9,-7)\)

    • one year ago
  8. satellite73
    Best Response
    You've already chosen the best response.
    Medals 1

    hope that is clear, and also that you see it is not that hard once you know what you are doing

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

    I'm still extremely lost, as you can tell math isn't my strong point. I appreciate the help however.

    • one year ago
    • Attachments:

See more questions >>>

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.