# Solve the system of equations by any method: substitution, or elimination? y=2x-4y and 4x+1=10y+7

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substitution

substitution

##### 1 Answer

Mar 31, 2018

No solution - the two lines are parallel

#### Explanation:

Let's use substitution:

Equation 1:

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:

Equation 1:

Equation 2:

These two equations describe 2 parallel lines:

graph{(y-2/5x)(y-2/5x+3/5)=0}