Question

1. the graph shows the relationship between the number of cartons and the number of them. cartons 1 2 3 4 eggs \boxed{1}

Explanation:

Step1: Find eggs per carton

From the graph, when cartons = 5, eggs = 15. Calculate rate: $\frac{15}{5}=3$

Step2: Fill table values

For 1 carton: $1 \times 3 = 3$
For 2 cartons: $2 \times 3 = 6$
For 3 cartons: $3 \times 3 = 9$
For 4 cartons: $4 \times 3 = 12$

Answer:

Cartons	1	2	3	4