## mathtard 4 years ago Is there anyone here that can give me detailed help I have some questions that I just can't seem to get right.

1. mathballet8888

whats the q

2. mathtard

Find the vertex, line of symmetry, and the minimum or maximum value. f(x)=8-x^2

3. amistre64

yeah, specific questions help out

4. mathtard

I really just need the vertex.

5. mathtard

yea if I could get anyone one here to answer my questions.

6. amistre64

it straddles the y axis, 8 above origin

7. amistre64

-x^2 is a turned over bowl so its max is its vertex y part

8. amistre64

and the symmetry is the y axis since it never leaves its home

9. satellite73

soup spilled out

10. amistre64

3 beans soup all over my lap; just great

11. mathtard

so the coordinates for the vertex are (2,8) ?

12. satellite73

vertex is $-\frac{b}{2a}$ for the first coordinate. in this case you might want to write $f(x)=-x^2+8$ so b = 0 and the vertex is (0,8)

13. mathtard

Ah!

14. amistre64

|dw:1314672133571:dw|

15. amistre64

i keep forgettin we got a draw lol

16. mathtard

LOL! THANK YOU!!!!

17. satellite73

|dw:1314672137462:dw|

18. satellite73

yikes mine are the worst! that is supposed to be $y=x^2$ $y=-x^2$ $y=-x^2+8$

19. satellite73

amistre picture nice and smooth... like gary coleman

20. amistre64

ive got an anti parkinsons device on my mouse ;)