Question 120897
There is no solution, they don't intersect!  There are many ways to show this is true.  One is you can change them both to the form y=mx+b.  Then you will see m=2 for both, so they are parallel lines.  Parallel lines never intersect.  Another way to show there is no solution is with substitution.  The first equation says 2x-y=4.  That means whenever you see 2x-y, you can substitute in 4.  So, the second equation, 2x-y=6 becomes 4=6.  This cannot be true, so there is no solution.