ANSWER
Yes, because it has a constant rate of change.
Step-by-step explanation
We want to check if the function represented in the table is a linear function.
A linear function is one in which there are two variables that are related in such a way that a change (increase or decrease) in one variable (independent variable) leads to a proportional change (increase or decrease) in the second variable (dependent variable).
If we look at the two variables given in the table, we see that as the x variable increases, there is a proportional increase in the y variable.
So we can say that there is a constant rate of change.
So, we can conclude that it is a Linear Function.