What is the constant proportionality for this relationship? y= 3,6,9,12 x= 2,4,6,8

Step-by-step explanation:

There is a constant difference between the x-values as well as the y-values.

The constant of proportionality can be found by calculating the slope using any pair of points

Let us use (2,3) and (4,6).

Use the slope formula:

We substitute the values to get:

Therefore the constant of proportionality is

the answer will be the last one