On a coordinate plane, the x-axis is labeled Number of gallons (g) and the y-axis is labeled Approximate number of liters (l). A line goes through points (0, 0), (1, 3.8), (2, 7.6), (3, 11.4).
Complete each sentence.

The relationship between number of liters and number of gallons .
The conversion factor is 1 gallon is approximately liters.
According to the graph, 8 liters is equivalent to approximately gallons.