# Cordinate Geometry

Sample question: A line passes through the centres of circles. $x^2+y^2+6x+3y+4 = 0$ and $x^2 +y^2 +x - 2y - 3 = 0$.

• Find the equation of the line.
• If the centres of the two circles above are the ends of a diameter of another circle, find its equation

Guide:

1. Review the concept of Cordinate Geometry in your textbook.