Question

x^2 + y^2 – 16 = 0

Answer 1

and what would you like to solve?

Answer 2

it's a circle and i guess the formula is (x-h)^2 + 9y-k)^2 = r^2

Answer 3

yes and h and k are both 0 which means that the center is at the origin

Answer 4

and what do you think the radius is?

Answer 5

wait i get the equation now but what does he want to solve?

Answer 6

*she; and i'm not sure how to get the radius. is the equation (x-0)^2 + (y-0)^2 = __

Answer 7

the right side = r^2

Answer 8

16^2?

Answer 9

the square of the radius

Answer 10

so would it be 16^2?

Answer 11

no r^2 = 16

Answer 12

ahh so r is four

Answer 13

x^2 + y^2 = 16

Answer 14

yes

Answer 15

alrighty then thank you!