Solve the system of equations by any method: substitution, or elimination? y=2x-4y and 4x+1=10y+7
No solution - the two lines are parallel
Let's use substitution:
We can substitute that into equation 2:
And we run into a problem with the question - these equations have no joint solution.
We can graph the two of them to see:
These two equations describe 2 parallel lines: