239,893 views
19 votes
19 votes
Solve the system using substitution!

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

Worth (50 Points) If answered correctly

User Jaumebonet
by
2.9k points

2 Answers

22 votes
22 votes

Solution:

Given that:

  • y = -x
  • 4x + 4y = -2

Substitute the value of y into equation #2.

  • 4x + 4(-x) = -2
  • 4x - 4x = -2
  • 0 ≠ -2

Since the equation has no variable and is false, this system has no solution.

User PaNaVTEC
by
2.9k points
13 votes
13 votes
No solution!

Step-by-step explanation:
4x+4(-x)=-2
4x+(-4x)=-2
4x-4x=-2
0x=-2
0≠-2

therefore there is no solution to the system because the x value subtracts from itself and 0 is not equal to -2.

Hope this helps!
User Tyler Crompton
by
2.6k points
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