My Question: http://oi60.tinypic.com/k4e80x.jpg

Question

My question is here in this link: http://oi60.tinypic.com/k4e80x.jpg

It's about Circle and equations of line.

Answer 1

I have a problem with the equation of the circle.

 

x² - 8y        + y² - 14y = -45                Completing the square

x² - 8y + 16 + y² - 14y + 49 = -45 - 16 - 49

(x - 4)² + (y - 7)² = -110   ??????