Question

Solve the system of equations by substitution. What is the solution for x?

2x + y = 1
4x + 2y = -1
Ox=0
Ox= 2
There is no x value, as there is no solution.
x can be any value, as there is an infinite number of solutions.​

Answer 1

Solve the system of equations by substitution. What is the solution for x?

2x + y = 1

4x + 2y = −1

x = 0

x = 2

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

Explanation:

Answer 2

There is no x value, as there is no solution

Explanation:

we have

2x+y=1

Isolate the variable y

y=-2x+1 -----> equation A

4x+2y=-1 ---> equation B

Solve the system of equations by substitution

Substitute the equation A in the equation B and solve for x

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

4x-4x+2=-1

2=-1 ------> is not true

therefore

The system has no solution

Equation A and equation B are parallel lines with different y-intercepts