Answer:
(- 9, 6 )
Step-by-step 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
(x + 9)² + (y - 6)² = 10², that is
(x - (- 9))² + (y - 6)² = 10² ← is in standard form
with centre = (- 9, 6 ) and r = 10
