Suppose AB is the diameter of a circle, where A = (-1,-3) and B = (3,-2). The equation of the circle is?

4(x-1)^2 +4(y+5/2)^2 =17

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- June 6th 2007, 06:12 AMAlexanderdiameter of a circle
Suppose AB is the diameter of a circle, where A = (-1,-3) and B = (3,-2). The equation of the circle is?

4(x-1)^2 +4(y+5/2)^2 =17 - June 6th 2007, 07:52 AMThePerfectHacker
I will give you the steps. I

**will not**do your homework for you.

1)Find the midpoint between . Use the midpoint formula (see below).

2)The answer to #1 is the center of circle.

3)Find the length between . Use the distance formula (see below).

4)The answer to #4 is diamter length, find half of it.

5)You know the center of circle and its radius. You can now describe its equation.

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Midpoint formula:

Distance formula: