Question

The distance time graph of a body moving with constant speed is a

Answer 1

Uniform motion means the object is moving with a constant velocity. The graph will be straight line as shown in the picture. It has constant gradient. Distance is increasing at a constant rate due to a constant velocity of the object.

Answer 2

the distance-time graph of a body moving with constant speed is straight line graph.

Or you can say it is in uniform motion.