The factor of dilation is 4.
hope this helps "dude" XD (;
Convert to the standard form:-
x^2 + 14x + y^2 - 6y = -42
(x + 7)^2 - 49 + (y - 3)^2 - 9 = -42
(x + 7)^2 + (y - 3)^2 = -42 + 49 + 9 = 16
r^2 = 16 so r = 4 and the diameter = 2*4 = 8 Answer
2/x = 15/9 divide 15 nd 9 nd u get C