If the graph is reflected over the x-axis, what is the domain of

the function?

This transformation doesn't represents a change on its domain

Step-by-step explanation:

When we reflect a function over the x-axis, that means y-values will change to the opposite, for example, if 4, 5, and 6 are y-values, they will change to - 4, - 5, - 6, and viceversa.

Now, this transformation doesn't represents a change on its domain, because there will be the same elements of such set. In other words, the reflection accross the x-axis just affect the range of the function.

Actually, with this x-axis reflection, the range becomes negative but the domain remains the same.