What is Position-Time Graph?

In short

A position-time graph shows where an object is at each moment. Time is on the horizontal axis, position is on the vertical axis, and the slope of the line is the velocity.

In simple words

A straight sloping line means constant velocity. A horizontal line means the object is at rest. A curve means the velocity is changing. A negative slope means the object is moving back towards the starting point, in the negative direction. A steeper line means a faster object.

Example

A cyclist is at $0\ \text{m}$ at $t = 0\ \text{s}$ and at $60\ \text{m}$ at $t = 12\ \text{s}$ . The slope is $\dfrac{60\ \text{m}}{12\ \text{s}} = 5\ \text{m/s}$ , so the velocity is $5\ \text{m/s}$ .

Also searched as: position and time graph, position time graph negative slope.