Explanation
We are given the following graph:
We are required to determine the domain and range of the given graph.
We know that the domain of a quadratic function is all real numbers.
The range of the function is from the vertex upwards.
Hence, the answers are:
[tex]\begin{gathered} (a)\text{ }range:[2,\infty) \\ (b)\text{ }domain:(-\infty,\infty) \end{gathered}[/tex]
