On a distance–time graph

PHYSICS · Subjective · CBSE · Physics · Motion · Motion

Problem

On a distance–time graph, the coordinates of a car at

t=3\,\text{s}

and

t=9\,\text{s}

are

(3\,\text{s},\,6\,\text{m})

and

(9\,\text{s},\,30\,\text{m})

respectively. Calculate the average speed of the car during this interval.