Question

Which of the following is the vertex of the quadratic equation y = -4(x - 6)^2 + 2?

1)
(6, 2)

2)
(-6, 2)

3)
(6, -2)

4)
(-6, -2)

Answer 1

(x-h)^2 + k where the minus inside of (x-h) is always a minus sign. H is thex-coordinate of your vertex and k is the y-coordinate. Its just you need to be careful with signs. When you see a minus sign inside of (x-h), the h is actually positive.

Answer 2

so it's (6,2)?

Answer 3

Yep :3

Answer 4

And just to mention it in case it shows up, if it had said (x+6)^2 + 2, itd actually be -6. The reason is that, like I said, that sign inside (x-h) is always negative. So the only way for it to say + 6 is if it were (x-(-6)). If that makes sense. I only mention it because I know it seems a little backwards with signs on those :P

Answer 5

thank you!

Answer 6

Np ^_^