Question

Solve the system of equations by substitution. What is the solution for x? (1 point)

2x + y = 1
4x + 2y = -1

Answer 1

There is no x value, as there is no solution.

I hope this helps :))

Answer 2

2x + y = 1
2x - 2x + y = 1 - 2x
y = 1 - 2x
y = -2x + 1
4x + 2y = -1
4x + 2(-2x + 1) = -1
4x + 2(-2x) + 2(1) = -1
4x - 4x + 2 = -1
2 ≠ -1

The solution of the problem can't be a solution because they are both parallel lines, which means they have no solution.