Answer:
It is a linear function because the graph contains the points (−3, 0), (−1, 1), (1, 2), which are on a straight line. (C)
Explanation:
This is because it is at a constant rate of change. The input column on a table would be adding 2 at a constant rate of change. On the output column on a table would be adding adding 1 at a constant rate of change.