An economics study on job growth in a country after a revolution results in the data below. The x-value is the number of years after the revolution and the y-value is the percent of unemployment in the country each year. x y
8 6.3
11 7.7
14 8.6
17 9.0
20 14.0

Compute the least squares regression line modeling this data. What is the percent of unemployment in the country 0 years after the revolution? Round your answer to two decimal places.

step-by-step explanation:

0lz try yourself sorry for not answering

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.