Question

Find the coordinates of the center and the length of the radius of the following circle.

x^2 + y^2 = 16

Answer 1

can you try this one? it's easy

Answer 2

ok so whats my steps aqain

Answer 3

if the center is (x1 , y1) and the radius is r
then the equation is
(x-x1)^2 + (y-y1)^2 = r^2

Answer 4

now compare this equation with the equation you have to figure out the center and the radius

Answer 5

so how would i do it aqain?

Answer 6

the equation you have can be written as
(x-0)^2 + (y-0)^2 = 4^2
do you get it know??

Answer 7

so 1,1
16

Answer 8

it is (0,0)
4

Answer 9

thnx

Answer 10

my pleasure XD
hope you understood it