A. A,b,c,d
B. B,c,a,d
C. c,a,b
D. b,a,c
if the focus is (1,-1) and the directrix is the line x + 2y – 9 = 0, the vertex of the parabola is at
I : If the points (2,-1), (5,k) are conjugate with respect to the parabola x2 = 8y then k = 7
II: If the lines 2x + 3y + 12 = 0,x – y + k = 0 are conjugate with respect to the parabola y2 = 8x then k = -12
If the normal at (1,2) on the parabola again at the point (l2,2t), then the value of t is
If P is a point on the parabola y2 = 4ax such that the subtangent and subnormal at P are equal, then the coridinate of P are
The tangents to the parabola y2 = 4ax at p (t1) and Q (t2) intersect at R. the area of Δ PQR is
The point on the parabola y2 = 36x whose oridinate is three times its abscissa is
the equation of the parabola whose axis is parallel to x –axis and passing through (- 2,1), (1,2), (-1,3) is
The length of the latus rectum of the parabola x2 + 4x – 8y + 28 = 0 is
The equation of the axis of the parabola 3x2 – 9x + 5y -2 = 0 is
The sub-tangent, ordinate and sub-normal to the parabola y2 = 4ax at a point ( diffferent from the origin ) are in