Question

What is the domain of the square root function graphed below?

Answer 1

The domain is the set of all allowed x values of a relation or function.

The smallest x can be is x = 3. This is the x coordinate of the left most point on the blue curve. Since x can be 3 or larger, we say,

domain:
`x \ge 3`

Answer: choice D

Answer 2

x>_ 3

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