Answer:
k = 6.78
Explanation:
If two variables x and y are respectively the independent and dependent variables and they are proportional to each other, then we can write the mathematical expression as y ∝ x.
This gives, y = kx ........... (1)
Where k = proportionality constant.
Now, we are given a linear equation of x and y and we have to get the constant of proportionality.
The given equation is y = 6.78x ............. (2)
Now, comparing equation (1) and (2) we get k = 6.78. (Answer)