MATHEMATICS · Single correct · A Level · Mathematics · Coordinate geometry in the (x y) plane · Coordinate geometry in the (x y) plane
Problem
The equation of the circle S(x,y)=0, where S(2,3)=16, which touches the line 3x+4y−7=0 at (1,1), is
(1) x2+y2+x+2y−5=0
(2) x2+y2+2x+2y−7=0
(3) x2+y2+4x−6y+13=0
(4) x2+y2−4x+6y−7=0