Displacement is the area under the velocity-time graph
For a constant velocity, use displacement = velocity × time
For a rectangular section, calculate area = base × height
For a triangular section, calculate area = 1/2 × base × height
For a trapezium section, calculate area = 1/2 × (sum of parallel sides) × height
Add all areas above the time axis
Subtract all areas below the time axis
The total signed area gives the displacement
Use consistent units, such as m/s for velocity and s for time
The final displacement unit is meters if velocity is in m/s and time is in s