Question

What is the equation of a circle with a radius of 7 and centered at point (3,-4)​

Answer 1

(x - 3)² + (y + 4)² = 49

Explanation:

The equation of a circle in standard form is

(x - h)² + *y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Here (h, k) = (3, - 4) and r = 7 , then

(x - 3)² + (y - (- 4) )² = 7² , that is

(x - 3)² + (y + 4)² = 49 ← equation of circle