Using a piece-wise function, the representation of the graph is given as follows:
Walking uphill for 3 hours and downhill for 1 hour.
What is a piece-wise function?
A piece-wise function is a function that has multiple definitions, depending on the input.
In this problem, we have that:
- For the first 3 hours, the slope is of 2 miles per hour, equivalent to walking uphill.
- For the final hour, the slope is of 3 miles per hour, equivalent to walking downhill.
Hence the meaning of the graph is:
Walking uphill for 3 hours and downhill for 1 hour.
More can be learned about piece-wise functions at https://brainly.com/question/27262465
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