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Mathematics 20 Online
OpenStudy (anonymous):

need help with quick algebra questions please

Directrix (directrix):

The quickest way to do that is to find the x-coordinate of the vertex of the parabola. x = -b/(2*a) where b = - 2, and a = 1. So, what is b equal to, @iappreciateyourhelp

Directrix (directrix):

@iappreciateyourhelp What did you get?

OpenStudy (anonymous):

B is equal to -2?

Directrix (directrix):

But, we're doing x = -(-2)/(2*1) = ? @iappreciateyourhelp

Directrix (directrix):

Yes, that is a vertical line (x = 1) and is the axis of symmetry.

Directrix (directrix):

Please post those new questions in two different threads. Close this one, okay?

OpenStudy (anonymous):

Okay.

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