Question

What are the domain and range of the quadratic parent function

Answer 1

The domain is all real numbers, and the range is nonnegative real numbers (y > 0)
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Explanation:

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Answer 2

The domain is all real numbers and the range is all the reals at or above the vertex y coordinate (if the coefficient on the squared term is positive) or all the reals at or below the vertex (if said coefficient is negative).