A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

help, will fan and medal!! What is the a value of the following function?

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

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

    ???????

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

    idk, i dont get what its asking

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

    the function is x^2 but this question is incomplete....

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

    so it would be 2?

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

    I think so.....

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

    that isn't simply a x^2 function.

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

    @phi not given in question..... i already said the question is incomplete @stacy.reed08

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

    based on the graph, I'd say the function itself is \[\frac{ 1 }{ 3 }x ^{2}\]

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

    ok, after re-reading they are asking about the "a" value I assume they mean, if we write the equation in the form y= a(x-h)^2 + k they want the "a"

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

    hmmm.....

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

    (h,k) is the vertex (the lowest point) and for your parabola, the vertex is (0,0) that means h=0 and k=0 and the equation is y = a(x-0)^2 + 0 and that simplifies to y= a x^2 to find a, put in an (x,y) pair that is on the parabola. For example, try using (3,3)

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

    so, its not 2..... hmmmm that's sure....

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

    @phi , nice catch! I completely missed the "a" in the problem. It makes much more sense now :)

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

    I would definitely use the point (3,3) since it's the only point that is clearly at an intersection of 2 whole numbers. Just plug it into the equation and solve for a. \[y=ax ^{2}\]\[3=a \times3^{2}\]\[3=a \times9\] finish it out and you're done!

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

    im still confused..i been sitting here trying to figure this out..

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

    Use the vertex form for finding the equation of a parabola. @phi already provided this... (h,k) is the vertex, which for the graph you provided is (0,0). Pick a point that is easy to identify like (3,3) and plug it into the vertex form equation. \[y=a(x-h)^{2}+k\]

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

    Plug in what you know... Given the point (3,3), y=3 and x=3. Given the vertex (0,0), h=0 and k=0 you end up with the equation below...just solve for "a" \[3=a(3-0)^{2}+0\]

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

    3=9a /9 3/9=a 1/3=a

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

    got it!

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

    i wish i could give you both medals..

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

    @phi definitely deserves it for catching the part we were all missing in the original problem!

  23. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I will help you to give medal to one of them. You pick one to do, I do the rest :)

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

    I gave it to @phi, but @stacy.reed08 i have more confussing ones that i could use some help one.

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

    @Penguin7 , I'll try my best! Just tag me in the problem.

  26. 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.