nicholas922 nicholas922
  • 14-12-2020
  • Mathematics
contestada

Pls help
y = 2x + 2
4x - y = -6

Respuesta :

jimrgrant1 jimrgrant1
  • 14-12-2020

Answer:

x = - 2, y = - 2

Step-by-step explanation:

Given the 2 equations

y = 2x + 2 → (1)

4x - y = - 6 → (2)

Substitute y = 2x + 2 into (2)

4x - (2x + 2) = - 6 ← distribute and simplify left side

4x - 2x - 2 = - 6

2x - 2 = - 6 ( add 2 to both sides )

2x = - 4 ( divide both sides by 2 )

x = - 2

Substitute x = - 2 into (1) and evaluate for y

y = 2(- 2) + 2 = - 4 + 2 = - 2

solution is x = - 2, y = - 2

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