Answer:
- we can conclude that for every single unit of : x, y would be increased by 0.2871.  and intersection of x and y will be through =1.5974
- it  can be  concluded that they are strongly positively correlated. There is strong and positive correlation between them. i.e the number of fatal accidents and the drivers under the age of 21 
Step-by-step explanation:
WITH THE GIVEN DATA 
A ) using regression to investigate the relationship between the number of fatal accidents and the percentage of drivers under the age pf 21 
to fit into a regression line we must have ∝ and β
where β =  = 0.2871
   = 0.2871
and ∝ = y - βx   =  - 1.5974
regression line = ∝ + β * x
insert values into regression line equation 
regression line = -1.5974 + 0.2871 * x
we can conclude that for every single unit of : x, y would be increased by 0.2871.  and intersection of x and y will be through =1.5974
B ) conclusion and recommendations can you derive from your analysis
it  can be  concluded that they are strongly positively correlated. There is strong and positive correlation between them. i.e the number of fatal accidents and the drivers under the age of 21 
using the correlation coefficient  ( r ) =  = 0.8394
    = 0.8394