Question

MEDAL!

For questions 1 – 2, answer the questions about circles.

(Picture below)

Answer 1

if h,k is centre ,
equation of circle is

(x-h)^2 + (y-k)^2 = r^2 , where r is radius and x&y are a point on circle

Answer 2

using this , tell me ur answer

Answer 3

(0-h)^2 + (0-k)^2 = 3^2?

Answer 4

wrong way :) (h, k) should be the center point of the circle
when the equation is (x-h)^2 + (y-k)^2 = r^2

Answer 5

Oops! Would this be right?
(x-0)^2 + (y-0)^2 = 3^2

Answer 6

yes :)

Answer 7

Alright! Thanks for the help and patience (:

Answer 8

now you know how to answer the second one as well? :)

Answer 9

Would the second be
(x-2)^2 + (y+3)^2 = 2^2?

Answer 10

yes :)
and the 2^2 part can be simplified to 4
and the 3^2 to 9 of course

Answer 11

Thanks so much!