How to find acceleration of an x-t graph?

To find the acceleration using a distance-time graph, following are the steps:

 

1) Firstly, velocity at various instants has to be found using the x-t graph.

The slope of position-time graph gives the value of velocity at a given instant of time.

 

2) Then a velocity-time graph has to be plotted using the found values of velocitiy at various instant.

 

3) The slope of the v-t gives the value of acceleration at that particular instant.