I don’t understand the question above... pls give step by step explanation...

Answer:
This is a linear function because the power of x is 1. Because of the +40 it's not a proportional relationship (they are in the form y = kx but the given equation is not) so the answer is the second option.
Answer:
The second option
Step-by-step explanation:
it is in the form y=mx+b, so it's linear
Also, it's non-proportional for that reason