Question

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

Answer 1

Answer:

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