Answer:
By definition, Proportional relationships have the following form:
y=kxy=kx
Where "k" is the Constant of proportionality.
By definition the graph of a proportional relationship is a straight line that passes through the origin (Point (0,0)(0,0) ).
Knowing this and having the relationship provided in the exercise, you can identify from the table that when:
x=0x=0 , y=32y=32
Then, the line does not pass through the origin, so you can conclude that the relationship between the temperature scales is not proportional.