Question

The function f(x)=√x is shown on the graph.

4
3+
2+
--5-4-3-2-1₁
-2+
-3+
4
1 2 3 4
Which statement is correct?
O The range of the graph is all real numbers less than
or equal to 0.
O The domain of the graph is all real numbers less
than or equal to 0.
O The domain and range of the graph are the same.
O The range of the graph is all real numbers.

Answer 1

The domain and range of the graph are the same

Explanation:

The domain and range of the graph are both
`[0,\infty)` because you cannot take the square root of a negative number to produce a real result, and you cannot square a real number to get a negative number.