Mathematics for IGCSE & O level - Graphs In Practical Situations (Section 7 - No. 6)
What is the graphical representation of an object moving at a constant speed?
A horizontal line on a distance-time graph
A straight line (not horizontal) on a distance-time graph
A curved line on a speed-time graph
A horizontal line on a speed-time graph
Explication
A constant speed means the distance covered increases linearly with time, shown by a straight line (not horizontal) on a distance-time graph.