On the grid, plot the data shown in Table L.1 for samples A, B and C as three curves on one set of axes.

• X-axis (horizontal): Label this axis "Time/min". A suitable scale would be 1 major grid square (which typically contains 5 small squares) representing 10 minutes. This means 2 small squares represent 4 minutes. Mark values at 0, 20, 40, 60, 80, 100, and 120 minutes.
• Y-axis (vertical): Label this axis "Volume of dough/cm³". A suitable scale would be 1 major grid square representing 5 cm³. This means 1 small square represents 1 cm³. Mark values at 0, 10, 20, 30, 40, and 50 cm³.

• Sample A: Plot the points (0, 12), (20, 18), (40, 26), (60, 34), (80, 39), (100, 45), (120, 48).
• Sample B: Plot the points (0, 12), (20, 12), (40, 12), (60, 13), (80, 13), (100, 13), (120, 14).
• Sample C: Plot the points (0, 12), (20, 20), (40, 32), (60, 41), (80, 48), (100, 48), (120, 48).

• Connect the plotted points for Sample A with a smooth curve.
• Connect the plotted points for Sample B with a smooth curve. This curve will be relatively flat, showing minimal change in volume.
• Connect the plotted points for Sample C with a smooth curve.

• Clearly label each curve as "Sample A", "Sample B", and "Sample C" on the graph.

The graph will show three distinct curves:

• Sample A will show a steady increase in dough volume over time, eventually leveling off.
• Sample B will show very little change in dough volume, remaining almost constant.
• Sample C will show a rapid increase in dough volume initially, then level off earlier than Sample A, reaching a maximum volume of 48 cm³ by 80 minutes.