Question

why is discriminant for a tangent zero?


if u dont know pls do not answer its a heartfelt request​

Answer 1

Answer:

If the discriminant of the resulting quadratic is negative, the line does not meet the parabola at all. If the discriminant of the resulting quadratic is positive, the line meets the parabola in two distinct points. If the discriminant of the resulting quadratic is zero, then the line is tangent to the parabola.