A. y=√3x±8

B. x=√3x±8

C. 2y=√3x-8

D. 2x=√3x-8

The common chord of x^{2}+y^{2}-4x-4y=0 and x^{2}+y^{2}=16 substends at the origin an angle equal to

The conjugate line of 3x+4y-45=0 with respect to x^{2}+y^{2}-6x-8y+5=0 which is perpendicular to x+y=0 is

The equation of the circle having a radius 2 and passing through the limiting points of the coaxal system x^{2}+y^{2}-6-2λ(x+y-4)=0 is

If the lines 2x-y+11=0, x-2y+3=0 intersecting the coordinate axes in four concyclic points then the centre of the circle passing through these four points is

The equation of the circle which touch the y-axis at a distance 4 from the origin and make an intercept 6 on the x-axis is