System of Substitution

-4x - y = 4

Y = 2x + 2

Substitute the 2x+2 for y in the first equation:

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

Distribute that negative:

-4x - 2x - 2 = 4

Combine like terms:

-6x - 2 = 4

Add 2 to both sides:

-6x = 6

Divide by - 6:

x = - 1

Substitute that - 1 into either equation:

y = 2x + 2

y = 2 (-1) + 2

y = - 2 + 2

y = 0

Answer:

x = - 1

y = 0