Shawn uses the same amount of mouthwash each day. The table shows the proportional relationship between the amount
of mouthwash he uses and time in days.
What is the constant of proportionality for the relationship
of teaspoons of mouthwash to time in weeks?
Mouthwash (teaspoons) 30 45 60
5
O O
7
6
9
12
Time (days)
O
35
o
42