Question

What is an equation of the circle with center (-5,4) and a radius of 7?

(1) (x-5)^2+ (y+4)^2=14
(2) (x-5)^2 +(y+4)^2=49
(3) (x+5)^2+ (y+ 4)^2=14
(4) (x+5)^2+ (y+ 4)^2=49

Answer 1

General equation is
(x-h)^2 + (y-k)^2 = r^2
Where (h,k) is the point where the center of the circle is, and 'r' is the radius of the circle.

D might be your answer, but you wrote it wrong, as you told me. :3

Answer 2

\(\bf (x-{\color{blue}{ h}})^2+(y-{\color{brown}{ k}})^2={\color{olive}{ r}}^2\qquad center\ ({\color{blue}{ -5}},{\color{brown}{ 4}})\qquad radius={\color{olive}{ 7}}\)

Answer 3

Thanks