Question

Write the equation of each circle. center at (-4, 3), radius 9

Answer 1

(x + 4)^2 + (y - 3)^2 = 9^2

Explanation:

Here our center is at (-4, 3), so h = -4 and k = 3. Radius, r, is 9.

Insert these values into the standard equation of a circle centered at (h, k) with radius r:

(x - h)^2 + (y - k)^2 = r^2 becomes:

(x + 4)^2 + (y - 3)^2 = 9^2

Answer 2

(x-h)²+(y-k)²=r²

putting respective value

(x--4)²+(y-3)²=9²

(x+4)²+(y-3)²=81