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Mathematics 18 Online
OpenStudy (xaze):

!! Help please? :3 How do I find the axis of symmetry, for each of these 3 functions?

OpenStudy (xaze):

OpenStudy (xaze):

Umm, I'm sorry, but it's rude to post a question on my question :/

OpenStudy (anonymous):

the third one you do with your eyeballs

OpenStudy (xaze):

Right. I believe the third one is x=-2?

OpenStudy (anonymous):

the second one you do by finding \(-\frac{b}{2a}\)

OpenStudy (anonymous):

yeah looks like \(x=-2\) to me

OpenStudy (xaze):

Nice =w= xD

OpenStudy (anonymous):

you got the second one?

OpenStudy (xaze):

OpenStudy (xaze):

^ I think that's right xD Not sure

OpenStudy (xaze):

@satellite73, So for the second one, in short, x = 1?

OpenStudy (anonymous):

yes, \(x=1\) is right

OpenStudy (xaze):

Got it! XD And lastly, how about for the first one? ^^

OpenStudy (anonymous):

it is already in vertex form \(y=a(x-h)^2+k\) has axis of symmetry \(x=h\)

OpenStudy (xaze):

x=h? As in, x = 4? :o

OpenStudy (xaze):

@satellite73

Directrix (directrix):

>x=h? As in, x = 4? Yes, that is correct for the first problem, y = -2(x-4)^2 + 2 @Xaze

OpenStudy (xaze):

@Directrix, Why, thank you! :3

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