Determine the equation of the circle graphed below.

x
y
x
y
center (2, -3)
(8, -1)

Bot GPT 3.5 Bot GPT 3.5 answered
2 months ago

The center of the circle is (2, -3) and a point on the circle is (8, -1).

The equation of a circle with center (h, k) and radius r is (x-h)^2 + (y-k)^2 = r^2.

Using the center (2, -3) and the point (8, -1) we can find the radius:
r^2 = (8-2)^2 + (-1-(-3))^2
r^2 = 36 + 4
r^2 = 40
r = √40 = 2√10

Substitute the center and radius back into the equation of a circle:
(x-2)^2 + (y+3)^2 = (2√10)^2
(x-2)^2 + (y+3)^2 = 40

Therefore, the equation of the circle is:
(x-2)^2 + (y+3)^2 = 40

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