The value `k` for which `4x^2+8x y+k y^2=9` is the equation of a pair of straight lines is__________

The slope of the straight line 2y=x+8 is ___.

Find the value of k if the following equation represents a pair of straight lines. Further, find whether these lines are parallel or intersecting 12x^(2)+7xy-12y^(2)-x+7y+k=0 .

Find the value of k, if the following equation represents a pair of straight lines . Further find wheter these lines are parallel or intersecting 12x^(2) + 7xy - 12 y^(2) - x + 7y + k = 0

Find the value of lambda if 2x^2+7x y+3y^2+8x+14 y+lambda=0 represents a pair of straight lines

The y-intercept of the straight line 3x-4y+8=0 is _____.

For what value of k does 12x^2+7xy+ky^2+13x-y+3=0 represents a pair of straight lines ? Also write the separate equations.

Find the separate equation of the following pair of straight lines 3x^(2)+2xy-y^(2)=0