true or false?
the graph distance versus time for n object moving at consatant speed is a curve.
If it is moving at constant speed the object is covering the same distance in equal intervals of time. Thus a distance v time graph for an object moving at a constant speed is a straight line, gradient of which is the speed.
If the motion is in a single direction, the graph of distance travelled vs. time is a straight line. However, speed can be constant while direction varies. In that case distance from the starting point will not graph as a straight line.
The answer depends upon how you define distance travelled. It can be measured along the path of motion (as an odometer would measure) or as distance from the starting point.