#### Answer

Domain= [0, 4]
Range= [0, 4]

#### Work Step by Step

The domain of a function refers to x values it takes, or can take.
For this graph, the x values taken range from 0 to 4, and so the domain must be [0,4]
The range of a function refers to the y values a function takes, or the 'height' of the function. The 'height' of this function ranges from 0 to 4, and so the range is [0,4].