Question

I dont understand how to find the equation

Answer 1

1st option

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 the radius

here (h, k ) = (1, 3 ) and r = 4 , then

(x - 1)² + (y - 3)² = 4² , that is

(x - 1)² + (y - 3)² = 16