# Coordinate Geometry

• Mar 25th 2011, 12:13 PM
Chrr
Coordinate Geometry
Find the equation of the following circles.

a) Centre (2,3) passing through the point (4,4)

b) Centre (4,6), touching the x-axis.
• Mar 25th 2011, 12:19 PM
Plato
Quote:

Originally Posted by Chrr
Find the equation of the following circles.
a) Centre (2,3) passing through the point (4,4)
b) Centre (4,6), touching the x-axis.

In both of these all you need is a radius.

For part a) what is the distance between $(2,3)~\&~(4,4)~?$

For part b) how far is $(4,6)$ from the x-axis?