A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

how do i find the vertex of a function?

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

    If it's a parabola of the form \[ax ^{2} + bx + c \] then the vertex is given by -b/2a

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

    You don't find the vertex of a function, per se, you find the vertex of something, like a parabola, an ellipse, etc.

  3. myininaya
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    not all parabolas are functions ellipses aren't functions unless you have the left and right raduis is 0 and the up and down radius is 0 then its just a dot and so it is a function

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

    my problem is find the vertex of f(x)=2x^2 it says find and label the vertex and the line of symmetry. do i have to graph it first?

  5. myininaya
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    f(x)=2(x-0)^2+0 vertex is (0,0)

  6. myininaya
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i dont know how to find the lines of symmetry

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

    but how do you know that? is it because there is no y intercept?

  8. myininaya
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i put the parabola in vertex form f(x)=a(x-h)^2+k where (h,k) is the vertex

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

    okay thanks. i got the symmetry part.

  10. myininaya
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    can you tell how you get symmetry part?

  11. myininaya
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    can we just since it is even it symmetric about x=0 or the y-axis

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

    yes. its where ever the parabola can be split in half. theres a formula but i cant think of it off the top of my head so i just look at a graph and sometimes there is no line of symmetry

  13. myininaya
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok thanks nikki :) i put look for the formula later

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

    Symmetry is related to the odd, even function business. An f(-x)=f(x) symmetric about the y axis. f(-x)=-f(x) symmetric about the origin.

  15. 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.