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How Many x-intercepts does this Parabola have? (Discriminant)
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You can use a shortcut formula ... D = b^2-4ac, to find out how many x-intercepts a quadratic function has.
Discriminant is POSITIVE = there are 2 x-intercepts
Discriminant is ZERO = there is 1 x-intercept
Discriminant is NEGATIVE = there are NO x-intercepts
Discriminant is POSITIVE = there are 2 x-intercepts
Discriminant is ZERO = there is 1 x-intercept
Discriminant is NEGATIVE = there are NO x-intercepts
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