A distance-time graph shows how far an object has travelled in a given time. Distance is plotted on the Y-axis (left) and Time is plotted on the X-axis (bottom). ... A moving object is always 'increasing' its total length moved with time. 'Curved lines' on a distance time graph indicate that the speed is changing.

Can a distance time graph be negative?

Can a distance-time graph have a negative slope? Nope. Distance is a non-directional quantity. During a motion, it can only either be kept unchanged or increased.

Can you have a negative distance?

Both distance and displacement measure the movement of an object. Distance cannot be negative, and never decreases. Distance is a scalar quantity, or a magnitude, whereas displacement is a vector quantity with both magnitude and direction. It can be negative, zero, or positive.