2x + 3y = 3 and x + 6y = -3

(3, - 1 )

Step-by-step explanation:

Given the 2 equations

2x + 3y = 3 → (1)

x + 6y = - 3 → (2)

Multiplying (1) by - 2 and adding to (2) will eliminate the y- term

- 4x - 6y = - 6 → (3)

Add (2) and (3) term by term eliminating y

- 3x = - 9 ( divide both sides by - 3 )

x = 3

Substitute x = 3 into either of the 2 equations and solve for y

Substituting into (2)

3 + 6y = - 3 ( subtract 3 from both sides )

6y = - 6 ( divide both sides by 6 )

y = - 1

Solution is (3, - 1 )

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b