Question

The graph of a quadratic function with vertex (-3,2) is shown in the figure below . Find the domain and the range

Answer 1

• domain: all reals
• range: y ≥ 2

Explanation:

The domain of any polynomial function, quadratics included, is "all reals."

The graph opens upward, so the y-value of the vertex is the minimum value of the range: y ≥ 2.