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What are the center and radius of the circle given by the equation
(x+5)^2+(y-7)^2=9?
A. (5, –7); 3
B. (–5, 7); 3
C. (5, –7); 9
D. (–5, 7); 9

Respuesta :

gmany

The equation of a circle:

[tex](x-h)^2+(y-k)^2=r^2[/tex]

(h, k) - a coordinates of the center

r - a radius

[tex](x+5)^2+(y-7)^2=9\\\\(x-(-5))^2+(y-7)^2=3^2[/tex]

Answer: B. (–5, 7); 3

b that is the answer

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