Manufactures are installing fewer smaller rims in favor of larger rims. One advantage of bigger rims is that they are better for braking. The following table lists the increase in 16 inch rim sales as a percentage of new vehicle sales for selected years from 1996 to 2002.
Sales of 16 inch rims
Year 1996, 1998, 2000, 2002
Percentage 28, 36, 43, 51
1)Plot the data in a scatter plot
2)Calculate the slope between consecutive points in the table. Intercept each slope.
3) Find the equation of a line that models the data. (Hint: you may want to use the point-

Question

Manufactures are installing fewer smaller rims in favor of larger rims. One advantage of bigger rims is that they are better for braking. The following table lists the increase in 16 inch rim sales as a percentage of new vehicle sales for selected years from 1996 to 2002. 
Sales of 16 inch rims 
Year               1996, 1998, 2000, 2002
Percentage        28,    36,     43,     51
1)Plot the data in a scatter plot 
2)Calculate the slope between consecutive points in the table. Intercept each slope. 
3) Find the equation of a line that models the data. (Hint: you may want to use the point-

anonymous · Answer

form, y-y1=m(x-x1))
4)Does your line model the data exactly? Could a line model these data exactly? explain
5)Use your equation to write a function P that models these data.
6) Evaluate P (1999) and intercept your results.

I have to answer part 5 and 6

anonymous · Answer

Do you want to use a regression line here?

anonymous · Answer

Honestly, I dont even know what that is

anonymous · Answer

Using a regression line, i get the best equation for the line being:
y=3.8x+28.1
This has a coefficient of linear correlation of 0.999654