Answer:
Camille's is linear
Explanation:
The weight for Camille's puppy increases in a constant rate(the puppy gains .5 pound per week, every week).
Amit's puppy is non-linear. Observe the table
X 1 2 3 4 5 6 7 8 9 10
Y 4 6 8 12 16 20 22 24 28 32
weeks start out with constant + 2 changes, then at week 3-4 the puppy gains a +4 (no longer linear - your line is no longer straight)
Olivia's puppy is linear