Question

What is the equation of a circle with center at (3, -5)
and a radius of 7?

Answer 1

first, do you know the equation of a circle?

Answer 2

If i do i don't remember it.

Answer 3

(x – h)^2 + (y – k)^2 = r^2

Answer 4

Alright

Answer 5

(h,k) is the coordinates for the center of the circle

Answer 6

Ok.

Answer 7

(h,k) could be viewed as (x,y) if you want so just substitute 3 for h and -5 for k and r for 7

Answer 8

(x – 3)^2 + (y + 5)^2 = 7^2

Answer 9

Alright.

Answer 10

(x – 3)^2 + (y + 5)^2 = 7^2
=49

Answer 11

tada! you're done

Answer 12

Thank you so much!