Question

How do I find the vertex for the quadratic function y=-2(x+3)^2-4 so I can find the other x and why values?

Answer 1

This is vertex form :
y = a( x-h) ^2 +k
Where (h,k) is the vertex

Answer 2

Any ideas on what the vertex for yours is?

Answer 3

(3.4) ?

Answer 4

No, not exactly. if it was a(x-h)^2 +k, and you have a +3 for the h value.. thats a double negative.. get it?

Answer 5

But if k is -4 is it (3,-4) ?

Answer 6

Yes, the -4 is right, but the 3 also needs to be negative because it's x- -3 --> x+3

Answer 7

Oh I see so (-3, -4)

Answer 8

Yep, thats right

Answer 9

Ohk, Thank you!

Answer 10

No problem