If x = - 3 is the only x-intercept of the graph of a quadratic equation, what is the best description of the discriminant of the equation?

A. The discriminant is negative.

B. The discriminant is - 3.

C. The discriminant is 0.

D. The discriminant is positive. oi

Question

Biology

Edwin Fitzpatrick

11 July, 17:57

If x = - 3 is the only x-intercept of the graph of a quadratic equation, what is the best description of the discriminant of the equation?

A. The discriminant is negative.

B. The discriminant is - 3.

C. The discriminant is 0.

D. The discriminant is positive. oi

+1

Answers (1)

Know the Answer?

Rebecca Olson · Answer 1

D = b^2 - 4ac defines the discriminant of a quadratic function.

If the value of D is equal to zero then there is only one real root.

Hence,

Best answer is:

C. The discriminant is 0.

If x = - 3 is the only x-intercept of the graph of a quadratic equation, what is the best description of the discriminant of the equation?A. The discriminant is negative.B. The discriminant is - 3.C. The discriminant is 0.D. The discriminant is positive. oi

If x = - 3 is the only x-intercept of the graph of a quadratic equation, what is the best description of the discriminant of the equation?

A. The discriminant is negative.

B. The discriminant is - 3.

C. The discriminant is 0.

D. The discriminant is positive. oi