Question

help

Answer 1

If x = –3 is the only x-intercept of the graph of a quadratic equation, which statement best describes the discriminant of the equation?

Answer 2

The discriminant is negative.
The discriminant is –3.
The discriminant is 0.
The discriminant is positive.

Answer 3

@TheTerrence

Answer 4

discriminant is 0

this is because
D>0 is two real roots
D=0 is one real root
D<0 is zero real roots

There is only one x-intercept, so there is only one real root.
Hence, D=0