Given the system of linear equations.

Part A: Solve the linear system of equations by graphing
Part B: Use substitution to solve the linear system of equations
Part C: Use addition to solve the linear system of equations
In your final answer, include all of your work, the graph of the equations and the solution.

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

c(x)= 6x + 3

step-by-step explanation:

the answer is 15 to your question