Question

I don't understand how to do this...
Topic is concept of proportionality

Answer 1

in question one, they want to know if the number of bottles to days is proportional
I would write the fraction
\[ \frac{bottles}{days}\]
for each of the entry (column)
for example the first column has 1 day and 4 bottles and the ration is
\[ \frac{bottles}{days} = \frac{4}{1}\]
which simplifies to 4.
If you get 4 for the other columns, then it is a proportion
check the next column: 8 bottles/2 days = 4
If you do that for each column, you always get 4.
so it is a proportion and the constant for bottles per day is 4