Question

Solve the system of equations using substitution.

y = −2x + 1
4x + 2y = −1

A.(0, −3)
B.(−3, 0)
C.No solution
D.Infinitely many solutions

Answer 1

C. No solution.

Explanation:

y = −2x + 1

4x + 2y = −1

Substituting y = -2x + 1 in the second equation:

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

4x - 4x + 2 = -1

2 = -1 which is absurd so there is no solution.