Question

Write the equation of a circle with center at (5, -4) and a radius of 7. (To express "squared" use ^2) *

Answer 1

(x-5)^2 + (y+4) ^2 = 49

Explanation:

A circle can be written in the form

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

where (h,k) is the center and r is the radius

(x-5)^2 + (y--4) ^2 = 7^2

(x-5)^2 + (y+4) ^2 = 7^2

(x-5)^2 + (y+4) ^2 = 49