Question

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

2x + y = 1
4x + 2y = −2

a
x = 0

b
x = 2

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

d
x can be any value, as there is an infinite number of solutions.

Answer 1

Answer:

Substitution Method

Substitution method can be applied in four steps.

Solve one of the equations for either x = or y = .

Substitute the solution from step 1 into the other equation.

Solve this new equation.

Solve for the second variable. ...

Step 1: Solve one of the equations for either x = or y = .

Step-by-step explanation:

Answer 2

solve your system of equations.

2x+y=1;4x+2y=−1

Solve 2x+y=1 for y:

2x+y+−2x=1+−2x(Add -2x to both sides)

y=−2x+1

Substitute (−2x+1) for y in 4x+2y=−1:

4x+2y=−1

4x+2(−2x+1)=−1

2=−1(Simplify both sides of the equation)

2+−2=−1+−2(Add -2 to both sides)

0=−3

Answer: No solution. C)