<u>The statement is true</u>: the area under the graph line made with the x-axis
represents the change in position of the object on a velocity versus time
graph.
Reasons:

The area under the velocity time graph is given by the integration of the function for the velocity over the time interval.
A constant velocity is an horizontal line and the integration of a constant with time, gives the product of time and the constant, which is area under the rectangular graph.
Therefore, the area under the graph line made with the x-axis represents the change in position of the object on a velocity versus time graph.
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