Find an equanom of circle passing through the points;
(i) \( (-7,3) \) and \( (-1,1) \) and touching the line \( x-2 y+3=0 \).
(ii) (1,2) and (1,-2) and touching the line \( x+2 y+5=0 \).
(iii) \( (0,0),(3,0) \) and touching the line \( 4 x+3 y+4=0 \)
