Answer:
Step-by-step explanation:
We can form a table for the relation between muffins sold and days of the week given in the graph.
Days Muffins sold
Monday 5
Tuesday 6
Wednesday 5
Thursday 8
Friday 10
Saturday 13
Sunday 15
This data reflects the sales of muffins are increasing continuously in the given week.
Therefore, number of muffins sold are directly proportional to the number of days of the week.
