The condition for the line lx + my + n = 0 to be a tangent to the parabola y² = 4ax is
Q1. The condition for the line lx + my + n = 0 to be a tangent to the parabola y² = 4ax is
Answer: ln = am²
Explanation: The condition for tangency is ln = am², derived by substituting y = (-lx - n)/m into y² = 4ax.