The equation `sqrt(x^2 + 4y^2 - 4xy+4) +x-2y=1` represent a (A) straight line (B) circle (C) parabola (D) pair of lines

The equation x^2y^2-9y^2-6x^2y+54 y=0 represents (a) a pair of straight lines and a circle (b) a pair of straight lines and a parabola (c) a set of four straight lines forming a square (d) none of these

The equation x^2y^2-9y^2-6x^2y+54 y=0 represents (a)a pair of straight lines and a circle (b)a pair of straight lines and a parabola (c)a set of four straight lines forming a square (d)none of these

The locus of the points of trisection of the double ordinates of the parabola y^2 = 4ax is : (A) a straight line (B) a circle (C) a parabola (D) none of these

The equation x^(2) - 2xy +y^(2) +3x +2 = 0 represents (a) a parabola (b) an ellipse (c) a hyperbola (d) a circle

The locus of the point (sqrt(3h),sqrt(3k+2)) if it lies on the line x-y-1=0 is (a) straight line (b) a circle (c) a parabola (d) none of these

The equation x^2+y^2+2x-4y+5=0 represents a. a point b. a pair of straight lines c. a circle of non zero radius d. none of these

If x/alpha+y/beta=1 touches the circle x^2+y^2=a^2 then point (1/alpha , 1/beta) lies on (a) straight line (b) circle (c) parabola (d) ellipse

If x/alpha+y/beta=1 touches the circle x^2+y^2=a^2 then point (1/alpha , 1/beta) lies on (a) straight line (b) circle (c) parabola (d) ellipse

The locus of the point (sqrt(3h+2), sqrt(3k) if (h, k) lies on x+y=1 is : (A) a circle (B) an ellipse (C) a parabola (D) a pair of straight lines

The locus of the point (sqrt(3h+2), sqrt(3k)) if (h, k) lies on x+y=1 is : (A) a circle (B) an ellipse (C) a parabola (D) a pair of straight lines