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The horizontal line represents that the acceleration is zero or constant speed and the line that slopes downward means that the object is slowing down and it is a negative acceleration.
You can infer that it is on or near a fault line. You can also infer that a earthquake is very likely to occur there.
Only if you know your location (the coordinate on the distance scale and the time scale) where "you" are can you infer if the object is moving towards you (the absolute distance to the object is decreasing) or away from you (the distance is increasing).
bar graph, double bar graph, line graph, and picto graph
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