- #1

lionely

- 576

- 2

## Homework Statement

1. (a) Find the equation of the circle with the straight line joining A(1;-1) and C(3; 4)

as diameter.

(b) Hence or otherwise, derive the general formula

(x - x

_{1})(x - x

_{2}) + (y - y

_{1})(y - y

_{2})=0

of the equation of a circle for the points A(x1; y1) and C(x2; y2):

## Homework Equations

## The Attempt at a Solution

I did part a) but part b) is baffling me could someone give me a hint on what to do?

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