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 2 years ago
A circle is shown on the coordinate plane below.
http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0802_07/image0034e849df3.gif
What is the equation of this circle?
x2 + (y + 1)2 = 4
x2 + (y – 1)2 = 2
x2 + (y + 1)2 = 2
x2 + (y – 1)2 = 4
 2 years ago
A circle is shown on the coordinate plane below. http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0802_07/image0034e849df3.gif What is the equation of this circle? x2 + (y + 1)2 = 4 x2 + (y – 1)2 = 2 x2 + (y + 1)2 = 2 x2 + (y – 1)2 = 4

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Sunshine447
 2 years ago
Best ResponseYou've already chosen the best response.1I think it's the first one

Sunshine447
 2 years ago
Best ResponseYou've already chosen the best response.1is it the first choice? I'm just double checking

Sunshine447
 2 years ago
Best ResponseYou've already chosen the best response.1why is it the last one?

Sunshine447
 2 years ago
Best ResponseYou've already chosen the best response.1wouldnt it be 2^2=4 so its the first one? Dont you have to add not subtract?

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.0general form of equation is : (xh)^2 + (yk)^2 = r^2 can you tell whats the center (h, k) and radus r, from the figure ?

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.0yeah radius you got it correct !!

Sunshine447
 2 years ago
Best ResponseYou've already chosen the best response.1yes, the center is 0,1 and the radius is 2

Sunshine447
 2 years ago
Best ResponseYou've already chosen the best response.1wait.... so which one is it?

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.0center = (h, k) = (0, 1) (xh)^2 + (yk)^2 = r^2

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.0plug in h and k values

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.0(x0)^2 + (y1)^2 = 2^2 x^2 + (y1)^2 = 4

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.0does that help/make sense ?
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