Question

How do you solve the following system of equations `y = (1/3)x + 6` and `y = (1/3)x - 6`?

Answer 1

These 2 equations represent parallel lines. For any value of `x` the corresponding value of `y` from the first equation is exactly `12` above the value of `y` from the second equation,
There are no solutions to this pair of equations.