Circle `x ^(2) + y^(2)+6y=0` touches

I.The circle x^(2)+y^(2)-6x-4y-7=0 touches y-axis II The circle x^(2)+y^(2)+6x+4y-7=0 touches x -axis Which of the followinf is correct (a) Both I and II are correct,(b) Neither I nor I are correct (c) Is correct,II is incorrect (d) I is incorrect II is correct

If the circle x^(2) + y^(2) = 9 touches the circle x^(2) + y^(2) + 6y + c = 0 internally, then c is equal to

Observe the following statements I. The circle x^(2)+y^(2)-6 x-4 y-7=0 touches y axis II. The circle x^(2)+y^(2)+6 x+4 y-7=0 touches x -axis which of the following is a correct statement?

Tangents drawn from P(1,8) to the circle x^(2)+y^(2)-6x-4y-11=0 touches the circle at the points A and B, respectively.The radius of the circle which passes through the points of intersection of circles x^(2)+y^(2)-2x-6y+6=0 and x^(2)+y^(2)-2x-6y+6=0 the circumcircle of the and interse Delta PAB orthogonally is equal to

Prove that the circle x^(2)+y^(2)+2x+2y+1=0 and circle x^(2)+y^(2)-4x-6y-3=0 touch each other.

Prove that the circle x^(2)+y^(2)+2x+2y+1=0 and circle x^(2)+y^(2)-4x-6y-3=0 touch each other.

Tangents drawn from the point P(1,8) to the circle x^(2)+y^(2)-6x-4y-11=0 touch the circle at points A and B. The equation of the cricumcircle of triangle PAB is