When a scatter plot shows a positive association means that there is a linear correlation with a positive slope between the two variables. This correlation can be weaker or stronger (depending on the value of the correlation).
If there is a linear correlation between the two variables, the relation is then a direct proportionality (with slope positive or negative).
Hence, it is always true that <span>a scatter plot that shows a positive association suggests that the relationship is proportional.</span>
Answer:

Step-by-step explanation:
We can write them both like functions like this


Where
x=input
A=Output A
B=Output B
We want the output of A 3 times the output of B this can be written like this:

we replace with the functions

we solve for x

The output that makes the out put of A 3 times teh output of B is 
A) 1+7n
b) 12+4n
Where in both cases n starts from 0
<span>125:2,197 and 25;169 </span>