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Mathematics 24 Online
OpenStudy (poopsiedoodle):

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

OpenStudy (mathhelp346):

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

OpenStudy (poopsiedoodle):

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

OpenStudy (mathhelp346):

Ok

OpenStudy (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?

OpenStudy (poopsiedoodle):

Yes.

OpenStudy (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

OpenStudy (mathhelp346):

Do you understand?

OpenStudy (poopsiedoodle):

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

OpenStudy (poopsiedoodle):

oh wait. I feel kinda dumb now.

OpenStudy (poopsiedoodle):

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

OpenStudy (mathhelp346):

o.O

OpenStudy (mathhelp346):

So do you understand?

OpenStudy (poopsiedoodle):

Yeah \(\Huge{:3}\)

OpenStudy (mathhelp346):

Ok ^-^

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