Find the center and radius of the circle with the given equation.
-$( x - 1.7 ) ^ { 2 } + ( y + 4.7 ) ^ { 2 } = 7$
A) $( 4.7 , - 1.7 ) ; r = \sqrt { 7 }$
B) $( 4.7 , - 1.7 ) ; \mathrm { r } = 7$
C) $( 1.7 , - 4.7 ) ; r = 7$
D) $( 1.7 , - 4.7 ) ; r = \sqrt { 7 }$

Question

Quizplus · Accepted Answer

The equation of a circle in the form $(x - h)^2 + (y - k)^2 = r^2$ has a center at $(h, k)$ and a radius $r$. For the given equation, $h = 1.7$, $k = -4.7$, and $r^2 = 7$, so $r = \sqrt{7}$.

Find the Center and Radius of the Circle with the Given