Question

What is the points that lies on the circle with center (2 3) and radius 2

Answer 1

x² + y² - 4x - 6y + 9 = 0

Explanation:

Circle equation with center (m,n) & radius r:

(x-m)² + (y-n)² = r²

Circle equation with center (2,3) & radius 2:

(x-2)² + (y-3)² = 2²

x² - 4x + 4 + y² - 6y + 9 = 4

x² + y² - 4x - 6y + 9 = 0