Question

E.C. What is the standard equation of a circle with center (h,k) and radius r in the coordinate plane?

Answer 1

(x − 4)2 + (y + 6)2 = 25

(x − 4)2 + (y − (-6))2 = 52

When I compare my equation with the standard form, (x − h)2 + (y − k)2 = r2, I get h = 4, k = -6, and r = 5. The center is at (4, -6), and the length of the radius is 5.

Explanation:

edmentum

Answer 2

(x-h)^2 + (y-k)^2 = r^2

Explanation:

Here, we want to write the standard equation of the circle

We have this as;

(x-h)^2 + (y-k)^2 = r^2

The above equation is the standard equation for the circle