The following links offer some useful revision on Velocity-Time Graphs to support your learning:
BBC Bitesize – Velocity-time graphs
e-Sgoil Video – Acceleration and velocity-time graphs
e-Sgoil Video – Velocity-time graphs ‘finding “a” and distance travelled’
Summary Note – Speed-time velocity-time graphs
To help with your learning, you may also wish to try some of the following resources: