cdawg111
how do you find the center and the radius of a cirlce..with (x+3)^2+y^2=16



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ktnguyen
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dw:1354663805261:dw

cdawg111
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so r would be 4?

cwrw238
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right

cdawg111
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how do i get the center

cwrw238
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compare x + 3 with x  h (h is x coordinate of the center)
what does that make x cood of centrer?

cwrw238
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do u follow me?

cdawg111
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no because i dont have a center

cwrw238
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center is h
comparing the 2 brackets h = 3 so what does that make h?

cdawg111
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3

cwrw238
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right
now in the case of y coordinate we have y^2 so the y cordinate is 0
so center is (3, 0)

cdawg111
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and radius is 4 correct

cwrw238
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yea

cdawg111
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thanks i got it

cwrw238
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yw