A graph is a pictorial representation of the data given.
There are different types of graphs depending on the requirements or specifications given.
In the given question you hike at the same time and same speed.
If the time is plotted against the x- axis and distance along the y- axis the given figure is obtained.
The distance increases at the steady pace then remains the same for some time and then decreases again at the same pace.
The trapezium shape is obtained.
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