Question

If x = 6 is the only x-intercept of the graph of a quadratic equation, which statement best describes the discriminant of the equation?

Answer 1

The discriminant equals to 0

Explanation:

We have to remember our discriminant rules;

d > 0, we have 2 real roots

d = 0, we have 1 real root

d < 0, we have 2 complex roots