Based on your description of the graph, it appears to represent a scenario where an object's distance over time is plotted, and the graph includes a diagonal line described as "y = x," which suggests a linear relationship between distance and time.
In this case, if the graph shows the distance increasing linearly with time (the diagonal line), the object is moving at a constant velocity. The velocity can be calculated as the slope of the line, which remains constant since the graph does not show any curvature or change in slope.
From the provided options, the correct statement is:
The object’s velocity is constant.