Question

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

equation?
The discriminant is negative
The discriminant is -3.
The discriminant is 0.
The discriminant is positive

Answer 1

The answer for this question is 0

Answer 2

The discriminant is 0

Explanation:

Since the graph of the quadratic equation has only one x-intercept, we can conclude that the quadratic has only one real root.

If a quadratic equation has only one real root, then the discriminant is 0

If x = -3 is the only x-intercept of the graph of a quadratic equation then the discriminant is 0