do these pairs of values (x and y) represent two quantities that are proportional?

Answer:
Yes, because [tex]\frac{2}{5}[/tex] and [tex]\frac{6}{15}[/tex] are equal
Step-by-step explanation:
[] Both [tex]\frac{2}{5}[/tex] and [tex]\frac{6}{15}[/tex] are equal to 0.4
-> Were do they get [tex]\frac{2}{5}[/tex] and [tex]\frac{6}{15}[/tex] from? If you look in the table, the first row has (2, 5) and the third row has (6, 15)
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather