If the equation `2x^(2)+4xy-2y^(2)+4x+8y+k=0` represents a pair of line, then k=

If the equation x^(2)+3xy+2y^(2)+x-y+k=0 represents a pair of line, then k=

Find the value of k, if the equation 2x^(2) + 4xy - 2y^(2) + 4x + 8y + k = 0 represents a pair of lines, Further find whether these lines are parallel or intersecting.

If the equation 2x^(2)+7xy+3y^(2)-9x-7y+k=0 represents a pair of lines, then k is equal to

If the equation 2x^(2)+7xy+3y^(2)-9x-7y+k=0 represents a pair of lines, then k is equal to

If the equation 2x^(2)-3xy+y^(2)-kx+5y+6=0 represents a pair of line, then k=

If 2x^(2)+xy-3y^(2)+4x+ky-6=0 represents a pair of lines then k=

If the equation kx^(2) – 2xy - y^(2)– 2x + 2y = 0 represents a pair of lines, then k =

If k x^(2)-y^(2)+2 x-y=0 represents a pair of lines, then k=

If the equation kx^(2)-y^(2)+4x-y=0 represents a pair of line, then k=