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Mathematics 20 Online
OpenStudy (anonymous):

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OpenStudy (anonymous):

OpenStudy (anonymous):

Center: (-4,2) Radius: 5

OpenStudy (anonymous):

Points: ( -4,7) , (-4,-3) , (-9,2) , (1,2) ?

Directrix (directrix):

Here come my Awesome ScreenShot. :)

Directrix (directrix):

Where is your equation of the circle?

Directrix (directrix):

Insert circle center coordinates and radius into the attached standard form of a circle equation.

OpenStudy (anonymous):

(x+4)^2 + (x-2)^2 = 25

Directrix (directrix):

typo: >> (x-2)^2 (y-2)^2

OpenStudy (anonymous):

Don't you put an addition sign since there's two negatives?

Directrix (directrix):

The variable is wrong.

OpenStudy (anonymous):

You put an addition sign in your screenshot silly!

Directrix (directrix):

(x+4)^2 + (x-2)^2 = 25 x was used twice. The signs are correct.

Directrix (directrix):

Change the second x to a y and it's done.

Directrix (directrix):

Don't you put an addition sign since there's two negatives? Yes.

OpenStudy (anonymous):

(x+4)^2 + (y-2)^2 = 25 . there.

Directrix (directrix):

Done.

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