My Math Forum the equation of a circle

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 April 27th, 2010, 07:53 PM #1 Newbie   Joined: Apr 2010 Posts: 1 Thanks: 0 the equation of a circle Let A (2, -3) B (3, -2), G is the focus of the triangle ABC 3x-y-8 = 0. Write the equation of a circle passing through three A, B, C. Thank you.
April 28th, 2010, 03:12 AM   #2
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Re: the equation of a circle

Quote:
 Originally Posted by hailua Let A (2, -3) B (3, -2), G is the focus of the triangle ABC 3x-y-8 = 0. Write the equation of a circle passing through three A, B, C. Thank you.
Two questions:

1. What is the focus of a triangle?

2. What triangle are you talking about? The equation 3x - y - 8 = 0 describes a straight line.

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