x*+y*+4x-9y-5=0 P(1,-3) s=-2	1
(x*+4x+4)+(y*-9y+81/4)= 5-4+81/4	1
(x+2)* + (y*-9/2)* = 85/4	1
S(-2,9/2) r=	1
Jp (S) = S' <=>PS=2#PS S'=(x,y)	1
[x-1,y+3] = -2[-2-1,9/2+3]	1
[x-1,y+3] = 6,-15]	1
x-1=6 x=7	1
y+3= -15 y=-18	1
r'=|S|#r r=2	1