Question

What is the solution of the system? Use substitution.

Answer 1

Substituting y=6x+2 into equation 3y - 18x =12 looks like:

3(6x + 2) - 18x = 12
18x + 6 - 18x = 12  distributive property left side
6 = 12  simplifying the left side

We now see a contradiction:   6 does not equal 12  What this tells us is that there is no solutions to this equation.  So choice 'C' ...

Answer 2

I believe there is no solution cause i tried to do the math and the answers didnt match eachother .... like how 3y-18x=12 is y=6x+4 not y=6x+2