## poopsiedoodle 2 years ago What is the equation of the axis of symmetry of the quadratic equation y = 2(x – 4)2 + 7?

1. Mathhelp346

Do you mean$y=2(x-4)^{2}+7$

2. poopsiedoodle

$$\large\text{if you help me with this, I will love you forever.}$$ And yes.

3. Mathhelp346

Ok

4. Mathhelp346

So you know that vertex form is $y=a(x-h)^{2}+k$ and that (h,k) is the same as (x,y) right?

5. poopsiedoodle

Yes.

6. Mathhelp346

Well the axis of symmetry is just x. And since x is 4 in this, the equation of the axis of symmetry is x=4

7. Mathhelp346

Do you understand?

8. poopsiedoodle

Kinda. The part I don't get is the (x-h)^2 part. I forgot the rule for squaring things inside of parentheses ._.

9. poopsiedoodle

oh wait. I feel kinda dumb now.

10. poopsiedoodle

don't even need that. Sorry for being a dingus.

11. Mathhelp346

o.O

12. Mathhelp346

So do you understand?

13. poopsiedoodle

Yeah $$\Huge{:3}$$

14. Mathhelp346

Ok ^-^