If the distance between the lines represented `9x^2-24xy+16y^2+k(6x-8y)=0` is `4` then `k` may be

The acute angle between the line represented by 9x^(2)-6xy+y^(2)+18x-6y+8=0 is

The distance between the two lines represented by the equation 9x^2-24xy+16y^2-12x+16y-12=0 is

The perpendicular distance between the lines 9x^(2)-24xy+16y^(2)+21x-28y+10=0 is

The distance between the two lines represented by the equation 9x^2-24xy+16y^2-12x+16y-12=0 is (a) 8/5 (b) 6/5 (c) 11/5 (d) none of these

The angles between the lines represented by the equation 4x^(2)-24xy+11y^(2)=0 are

The angles between the lines represented by the equation 4x^(2)-24xy+11y^(2)=0 are

The distance between the two lines represented by the equation 9x^2-24xy+16y^2-12x+16y-12 =0