Ruth can read 15 pages in 30 minutes. She decides to create a table to keep track of her progress. From the data provided, at what ratio is the constant of proportionality? (11-2,30) (15,1-2) (2,60) (1,30)
To find the ratio of the constant of proportionality, we need to compare the change in the dependent variable (number of pages read) to the change in the independent variable (time in minutes).
Using the given points (15, 1-2) and (2, 60), we can calculate the ratio as follows:
Ratio = (Change in pages read) / (Change in time)
= (1-2 - 60) / (15 - 2)
= (-1 - 60) / (13)
= -61 / 13
So, the ratio of the constant of proportionality is -61/13.