Question

If
${x}^{2} - 3xy + k {y}^{2} + 3x - 5y + 2 = 0$
represents a pair of straight lines, find the value of k.​

Answer 1

Answer:

For a straight line- ∆ = 0

$abc - a {f}^{2} - c {b}^{2} - b {g}^{2} = 0 \\ \\ k = 2$