Respuesta :

sqdancefan

Answer:

  • center: (0, 0)
  • radius: 3

Step-by-step explanation:

Compare the equation to the standard form for the equation of a circle:

  (x -h)² +(y -k)² = r² . . . . center (h, k), radius r

  x² + y² = 9

We can see that h = k = 0, and r = √9 = 3.

The center is (0, 0), and the radius is 3.