" If the curves "y^(2)-6x,9x^(2)+by^(2)=16" intersect each other at right angles,then the value of "b" is: "

If the curves y^(2) = 16x and 9x^(2)+by^(2) =16 cut each other at right angles, then the value of b is

If the curves y^2=6x,9x^2+by^2=16 , cut each other at right angles then the value of b is

If the curves (x^(2))/(alpha)+(y^(2))/(4)=1 and y^(2)=16x intersect at right angles,then a value of alpha is

If the curves (x^(2))/(a^(2)) + (y^(2))/(12) = 1 and y^(3) = 8x intersect at right angles, then the value of a^(2) is equal to

If the curves (x^(2))/(alpha)+(y^(2))/(4)=1 and y^(3)=16x intresect at right angles, then a value of alpha is

If the curves (x ^(2))/(a ^(2)) + (y ^(2))/(12) =1 and y ^(3) =8x intersect at right angles, then the value of a ^(2) is equal to