A proportional relationship is used to illustrate linear equations.
The constant of proportionality is 3
From the table, we have the following points:
(x,y) = (2,6) (3,9)
The constant of proportionality is calculated using:

So, we have:

Subtract

Divide

Hence, the constant of proportionality is 3
Read more about constants of proportionality at:
brainly.com/question/18707816
Change everything to the same thing. See like how 30% is a percent you can move the decimal of 0.8 to make it a percent like 80%, then for 3/5 you divide 3 by 5 and you get 0.6 then you can move the decimal to get 60%. So all you have to do now is order the percentages from smallest to largest. Like so 30%, 60%, 80% which then ends up as 30%, 3/5, 0.8.
-4z+1 = bz+c
Take all z's to one side
1 = bz+c+4z
Then take c to the other side
1-c = bz+4z
Factor out z on the right side
1-c = z(b+4)
Then divide (b+4) from both sides
z = 1-c/b+4 or (1-c)/(b+4)