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

soccerrocks34555 Group Title

Suppose a parabola has a vertex (-8,-7) and also passes through the point (-7,-4). write the equation of the parabola in vertex form.

  • 2 years ago
  • 2 years ago

  • This Question is Open
  1. klimenkov Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    \(y+7=3(x+8)^2\)

    • 2 years ago
  2. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    The answer is y=3(x+8) -7 .. I just dont know how to get it

    • 2 years ago
  3. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    Vertex form is: \[a(x-h)^{2}+k\]

    • 2 years ago
  4. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    \[(h,k) \] is your vertex

    • 2 years ago
  5. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I know that but when I plug the problem into it I don't get the correct answer. What am I doing wrong. Can you please explain how to do it to me

    • 2 years ago
  6. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    So -8 and -7 are vertex

    • 2 years ago
  7. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    -8 = h -7= k

    • 2 years ago
  8. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    a ( -7+8) Squared + 7 is that right

    • 2 years ago
  9. klimenkov Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Subtract -7 from both sides of my equation.

    • 2 years ago
  10. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    No.

    • 2 years ago
  11. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1352657063399:dw|

    • 2 years ago
  12. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Okay. So now do we have to plug in the other points that it passes through

    • 2 years ago
  13. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1352657115052:dw|

    • 2 years ago
  14. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Then do I add 4 to the 7 ?

    • 2 years ago
  15. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    No, because you want to solve for a. SO add the 7 to the 4

    • 2 years ago
  16. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    which is 3

    • 2 years ago
  17. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes.

    • 2 years ago
  18. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1352657369387:dw|

    • 2 years ago
  19. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ahhh I get it now! Thank you so much for your help. Changing topics can you help me with another problem?

    • 2 years ago
  20. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    Sure.

    • 2 years ago
  21. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    What point in the feasible region minimizes the objective function? X > 0 y>0 y<4 Y < -x +5 Above are the constraints Objective Function: C= -9x+y The answer is (5,0) but I don't understand how to get it.

    • 2 years ago
  22. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    gimme a sec please

    • 2 years ago
  23. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    okay no problem!

    • 2 years ago
  24. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1352658011264:dw|

    • 2 years ago
  25. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    okay.

    • 2 years ago
  26. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I was thinking you had to plug some stuff in to get the final answer

    • 2 years ago
  27. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    I used my graphing calc. I graphed y=-x+5

    • 2 years ago
  28. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    the x intercept of that is (5,0)

    • 2 years ago
  29. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    That's the vertex.. right

    • 2 years ago
  30. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Cause have another example of a problem like that.. & that doesn't work Graph the system of constraints and find the value of x and y that minimize the objective function. 20. Constraints x ≥ 0 y ≥ 0 y ≤ 3 y < − 2x + 5 Ï Ì Ó Objective function: C = −8x + 5y

    • 2 years ago
  31. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    (5,0) is the vertex because y=-x+5 is a line

    • 2 years ago
  32. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    please ignore those random letters the answer is (5 / 2,0)

    • 2 years ago
  33. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ohh i see what your saying

    • 2 years ago
  34. Brittni0605 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    If you graph, y=-2x+5, your x intercept is (5/2, 0)

    • 2 years ago
  35. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    how do you see that..

    • 2 years ago
  36. soccerrocks34555 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I put it in my graphing calculator

    • 2 years 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.