B2 - 4ac > -1 means the root is real. is it true or false? ?

The correct result would be True.

If the discriminant of a quadratic equation is equal to zero (b^2 - 4ac = 0), there is one real root which is repeated. If the discriminant is positive (b^2 - 4ac > 0), there are two real roots; and if the discriminant is negative (b^2 - 4ac < 0), there are two complex roots.

The answer is 'D'

Step-by-step explanation:

I'm assuming the x-values are the first circle (one on left) and the right circle is for y-values. So the range, which deals with the y-values of a function, would be (3,9,12).

Hope this helps!