The constant of proportionality (or the slope) is 3. Observe that if x increases by 2 (from 1 to 3), y increases by 6 from 3 to 9, so that m = rise/run = 6/2, or 3.
3. The constant of proportionality is how much it increases by or decreases by each time. Since the numbers in x and y are increasing by 3, that would be your answer.
Ex: X: 1x3=3 3x3=9 9x3=27 27x3=81 As you can see every time you multiply by 3 it would equal the next number in the table. This applies for the y values as well.
