Question

Find the equation of the circle in standard form.
center (5,-5)
radius = 3 units

Answer 1

(x - 5)² + (y + 5)² = 9

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 ) = (5, - 5 ) and r = 3 , then

(x - 5)² + (y - (- 5) )² = 3² , that is

(x - 5)² + (y + 5)² = 9