If line `(y-7)+k(x-4)=0` cuts `2x+y+4=0` and `4x+2y-12=0`] at 'P' and 'Q' respectively, where `|PQ|=2(sqrt(5))` then value of `k` is

If lines 2x-3y+6=0 and kx+2y=12=0 cut the coordinate axes in concyclic points, then the value of |k| is

A line parallel to y-axis,cuts the circle x^(2)+y^(2)=a^(2) and parabola.y^(2)=-4a(x-a),a<0 at points P and Q respectively,in the first quadrant.If the lacus of the middle point of P and Qy=sqrt(a(a-x))+(k)/(4)sqrt(a^(2)-x^(2)) ,then value is

If the distance between the lines 2x+y+k=0,6x+3y+2=0 is (7)/(3sqrt(5)) then the value of k is

If the distance of line 2x-y+3=0 from 4x-2y+p=0 and 6x-3y+r=0 is respectively 1/sqrt(5) and 2/sqrt(5)

If the line x-3y+k=0 touches the parabola 3y^(2)=4x then the value of k is

If the line (x-y+1)+k(y-2x+4)=0 makes equal intercept on the axes then the value of k is

If the lines x-y-1=0, 4x+3y=k and 2x-3y+1=0 are concurrent, then k is

The circle x^(2)+y^(2)=4 cuts the circle x^(2)+y^(2)-2x-4=0 at the points A and B. If the circle x^(2)+y^(2)-4x-k=0 passes through A and B then the value of k , is

If the line " 4y-3x-8=0 " cuts the parabola " x^(2)+y-4=0 " at "A" and "B" .and " |PA.PB| " is equal to " (k)/(8) " where " P=(0,2) " then the value of "k" is.

If circles x^(2) + y^(2) - 3x + ky - 5 = 0 " and " 4x^(2) + 4y^(2) - 12x- y - 9 = 0 are concentric , then k =