Deon used quarts of gasoline on a road trip. He wants to know how much gasoline was used in gallons.

To create a double number line that shows the conversion of quarts to gallons, we first need to know the conversion factor: there are 4 quarts in 1 gallon.

Here’s how you can set up the double number line:

Double Number Line:

Quarts:  0     4      8     12     16    20
            |-----|-----|-----|-----|
Gallons:  0     1      2      3      4

Explanation:

• The top line represents quarts, starting from 0 and increasing in increments of 4.
• The bottom line represents gallons, starting from 0 and increasing in increments of 1.
• Each 4 quarts corresponds to 1 gallon.

If Deon used a certain number of quarts, you can find how many gallons he used by dividing the number of quarts by 4.

For example, if Deon used 8 quarts:

• \( \text{Gallons} = \frac{\text{Quarts}}{4} = \frac{8}{4} = 2 \text{ gallons} \)

Feel free to plug in the specific number of quarts Deon used into the same formula to find out the equivalent in gallons!