Two pairs of straight lines have the equations `y^2+x y-12 x^2=0` and `a x^2+2h x y+b y^2=0` . One line will be common among them if. (a)`a+8h-16 b=0` (b) `a-8h+16 b=0` (c)`a-6h+9b=0` (d) `a+6h+9b=0`

Two pairs of straight lines have the equations y^2+x y-12 x^2=0 and a x^2+2h x y+b y^2=0 . One line will be common among them if. a+8h-16 b=0 (b) a-8h+16 b=0 a-6h+9b=0 (d) a+6h+9b=0

Two pairs of straight lines have the equations y^(2)+xy-12x^(2)=0 and ax^(2)+2hxy+by^(2)=0. One line will be common among them if.(a)a +8h-16b=0 ) (b) a-8h+16b=0(c)a-6h+9b=0 (d) a+6h+9b=0

The equation a^2x^2+2h(a+b)x y+b^2y^2=0 and a x^2+2h x y+b y^2=0 represent

The equation a^2x^2+2h(a+b)x y+b^2y^2=0 and a x^2+2h x y+b y^2=0 represent

The equation a^2x^2+2h(a+b)x y+b^2y^2=0 and a x^2+2h x y+b y^2=0 represent

If the pairs of lines ax^2+2hxy+by^2=0 and a'x^2+2h'xy+b'y^2=0 have one line in common, then (ab'-a'b)^2 is equal to

If the pair of lines a x^(2)+2 h x y-a y^(2)=0 and b x^(2)+2 g x y-b y^(2)=0 be such that each bisects the angle between the other then

Through a point A (2,0) on the x-axis, a straight line is drawn parallel to the y-axis so as to meet the pair of straight lines a x^2+2h x y+b y^2=0 at B and Cdot If A B=B C , then (a) h^2=4a b (b) 8h^2=9a b (c) 9h^2=8a b (d) 4h^2=a b

Through a point A (2,0) on the x-axis, a straight line is drawn parallel to the y-axis so as to meet the pair of straight lines a x^2+2h x y+b y^2=0 at B and Cdot If A B=B C , then (a) h^2=4a b (b) 8h^2=9a b (c) 9h^2=8a b (d) 4h^2=a b

Through a point A on the x-axis, a straight line is drawn parallel to the y-axis so as to meet the pair of straight lines a x^2+2h x y+b y^2=0 at B and Cdot If A B=B C , then (a) h^2=4a b (b) 8h^2=9a b (c) 9h^2=8a b (d) 4h^2=a b