Amaths: Curves and Circles question

Do enlighten me by providing workings... thanks

1) Find the equation of circle which pass through point (2,1) and (0,-3) and has its centre lying on the line 3X+5y-3=0

Ans:x^2+y^2-22X+12y+27=0

2)A idameter AB of a circle x^2+y^2-6X+2Y+5=0 is parallel to the line 2X+Y+5=0. Find the coordinates of A and of B.

Ans: A(3,4) , B(5,0)

Hi,

Your Q1 looks like Q8 in another post, do have a look at:

http://sgforums.com/forums/2297/topics/453880

Hope that helps, have a great week ahead!

Cheers,
Wen Shih

Damn it... I suck at maths~