Write an equation of the circle with the given center and radius.
-$( 0 , - 9 ) ; \sqrt { 19 }$
A) $( x - 9 ) ^ { 2 } + y ^ { 2 } = 361$
B) $x ^ { 2 } + ( y + 9 ) ^ { 2 } = 19$
C) $( x + 9 ) ^ { 2 } + y ^ { 2 } = 361$
D) $x ^ { 2 } + ( y - 9 ) ^ { 2 } = 19$

Question

Quizplus · Accepted Answer

The general equation for a circle with center $(h, k)$ and radius $r$ is $(x - h)^2 + (y - k)^2 = r^2$. For a circle with center $(0, -9)$ and radius $\sqrt{19}$, the equation is $x^2 + (y + 9)^2 = 19$.

Write an Equation of the Circle with the Given Center (0,−9);19( 0 , - 9 ) ; \sqrt { 19 }(0,−9);19​

Write an Equation of the Circle with the Given Center $( 0 , - 9 ) ; \sqrt { 19 }$