If `12x=k` is the directrix of parabola `y^2 + 4y+3x=0`, then which of the following true? (A) `k=25` (B) `k=0` (C) `k=5` (D) `k=15`

If the line x-1=0 is the directrix of the parabola y^2-k x+8=0 , then one of the values of k is 1/8 (b) 8 (c) 4 (d) 1/4

If the line x-1=0 is the directrix of the parabola y^2-k x+8=0 , then one of the values of k is (a) 1/8 (b) 8 (c) 4 (d) 1/4

If the line x-y+k =0 is a tangent to the parabola x^(2) = 4y then k = ?

If the focus of the parabola x^2-k y+3=0 is (0,2), then a values of k is (are) (a) 4 (b) 6 (c) 3 (d) 2

If the focus of the parabola x^2-k y+3=0 is (0,2), then a values of k is (are) 4 (b) 6 (c) 3 (d) 2

If 2x + y + k - 0 is a focal chord of y^(2) + 4x = 0 then k =

Let y^(2) -5y +3x +k = 0 be a parabola, then

The value of k for which the pair of linear equation 4x+6y-1=0a n d2x+k y-7=0 represent parallel lines is (a) k=3 (b) k=2 (c) k=4 (d) k=-2

Four distinct points (k, 2k), (2, 0), (0, 2) and (0,0) lie on a circle for : (A) k = 0 (B) k = 6/5 (C) k = 1 (D) k = -1

If x=k^2 and y=k is a solution of the equation x-5y+6=0 then find the values of k