Well first you wanna see how many pints are in 3 quarts, which is 6 because there are 2 pints in a quart.
Common difference: 6
First term: 7
Second term: 13
Third term: 19
Fourth term: 25
Fifth term: 31
I hope this is correct and helps!
This isn't linear if it wasn't linear, the last y wouldn't be 4