## anonymous 5 years ago determine the vertex (both coordinates). (-x^2/3)-(x/2)-(1/5)

1. amistre64

1/2 ---- = -3/4 is your x coord i believe -2/3

2. amistre64

-0.0125 = -1/8 would be the y coord.... if i see it right

3. amistre64

(-1/3)x^2 -(1/2)x -(1/5) -2/3x -1/2 x = -1/2//2/3 = -3/4 ....yep

4. amistre64

2.5 4.25 8.125 16.0625

5. amistre64

-5/16 maybe

6. amistre64

125/1000 lol

7. anonymous

$\frac{-b}{2a}=\frac{\frac{1}{2}}{2\times -\frac{1}{3}}=-\frac{3}{4}$\]

8. amistre64

gonna have to ask a brit

9. amistre64

(-.75,-.0125) ;)

10. anonymous

i got -.95

11. amistre64

(-((-.75)^2)) / 3) - ((-.75) / 2) - (1 / 5) = -0.0125 hot of the google

12. anonymous

$-2\times (-\frac{3}{4})^2-\frac{1}{2}\times -\frac{3}{4}-\frac{1}{5}$

13. amistre64

-2?

14. anonymous

you are right. i was multiplying the first term by -2 because i am not paying attention.

15. amistre64

it helps to sit facing a wall; that way when the butterflys float by you dont get distracted lol

16. anonymous

just came to see if you were still here. you are more obsessed than i am!

17. anonymous

thanks guys

18. anonymous

im stiil trying to figure out you plug in -3/4 for x right?

19. amistre64

yes, x = -3/4 = -.75

20. anonymous

and how is y?

21. amistre64

you simply use the value for x in the equation to determine what 'y' equals.... no easy way around htat