Answer:
Function A: Linear
Function B: Nonlinear
Step-by-step explanation:
1. When looking at tables, an easy way to tell if it's linear or not is to determine if the slope is the same between different coordinates.
Try (3,5) (6,10)
y2-y1/x2-x1
10-5/6-3
5/3
Now try (6,10) (9,15)
15-10/9-6
5/3
The slopes are the same, so this function is in fact linear.
2. For graphs, linear functions form a straight line. The line in this graph is clearly curved, so it is not linear.
