Find the center and radius of the circle with the equation: a. center: (-5, 1) radius: 4 c. center: (-5, 1) radius: 2 b. center: (5, - 1) radius: 4 d. center: (5, - 1) radius: 2

Step-by-step explanation:

if center = (h, k)

radius=r

eq. of circle is (x-h) ^2 + (y-k) ^2=r^2

a.

center = (-5,1)

radius=4

eq. of circle is (x+5) ^2 + (y-1) ^2=4^2

b.

center = (5,-1)

radius=4

eq. of circle is (x-5) ^2 + (y+1) ^2=4^2

c.

center = (-5,1)

radius=2

eq. of circle is (x+5) ^2 + (y-1) ^2=2^2

d.

center = (5,-1)

radius=2

eq. of circle is (x-5) ^2 + (y+1) ^2=2^2