Question

How do you write an equation for a circle with center at (-2,7) and diameter of 14?

Answer 1

The equation for a circle with center (h,k) and radius = r is:
`(x-h)^2+(y-k)^2=r^2`.

Explanation:

Your center is (-2,7), so h = -2 and k = 7.
Your diameter is 14, so the radius r = 7.

`(x+2)^2+(y-7)^2=49`