## carlenstar281 2 years ago help me math question???

1. LizzyLove<3

what math question?

2. carlenstar281

sorry my computers slow here What is the vertex of the parabola?

3. carlenstar281

the answers are (–1, 0) (0, –3) (1, –4) (3, 0)

4. Elak

I cant see your image can you draw it?

5. carlenstar281

i cant sorry :(

6. carlenstar281

I can try to explain it

7. Elak

y = ax^2 + bx + c. is the equation of the parabol

8. Elak

- b/2a gives the x-coordinate of the vertex.

9. carlenstar281

it is? do you know the answer then? I have like a hundred more i have to do and i have no clue

10. Elak

ok I will bring an example and you try to compare with yours ok, because you give not enogh information

11. carlenstar281

if this helps the lines are curved up in a half oval in the middle

12. carlenstar281

okay please do that would help me :)

13. Elak

Find the vertex of the parabola. y = 3x^2 + 12x – 12, Here, a = 3 and b = 12. So, the x-coordinate of the vertex is: x= -12/2(3)=-2 Substituting in the original equation to get the y-coordinate, we get: y = 3(–2)^2 + 12(–2) – 12 = –24 So, the vertex of the parabola is at (–2, –24).

14. Elak

understand?

15. carlenstar281

yes thank you :)

16. Elak

welcome :))