Question

Solve system using substitution.
4.y=x+4
x-y=8

Answer 1

no solution

Explanation:

Since you are using substitution, you will plug in one of the variables using one of the equations.

y=x+4

x-y=8

put the y from above into the y below

x-(x+4)=8

Now, solve the equation

x-x-4=8

Put x's together

-4=8

-4 does not equal 8, so this system of equations has no solution