Coaxial System

Q.

The point (2, 3) is a limiting point of a coaxial system of circles of which $x^2+y^2=9$ is a member. The co-ordinates of the other limiting point is given by

1. 

2. 

3. 

4. 

Q.

$x^2+y^2-4x+6y-12=0$ and $x^2+y^2+6x+18y+26=0$ __________.

1. Touch each other externally

2. One circle lies completely outside the other circle

3. One circle lies completely inside the other circle

4. Touch each other internally