joshuacarter166 joshuacarter166

29-11-2016
Mathematics

Answered

System of Substitution

-4x - y = 4

Y = 2x + 2

Verified Answer :

KeaneNR KeaneNR

06-12-2016

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

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