proportional relationships have constant ratios.
the graph is a line, so it is a proportional relationship. (A)
the function is in the form y=kx (proportional function) (C)
Find the ratio of the tables: (B)

D

All represent a proportional relationship
Hello.
e is a mathematical constant, and it's like pi, it's irrational. It's approximately equal to 2.71828....
So,
It's approximately equal to 4.5 which is choice
2.
The degree is 4 because it is the largest exponent out of all the variables.