heartprague
heartprague heartprague
  • 11-01-2019
  • Mathematics
contestada

Use substitution to solve the linear system of equations.

y=4x
3x+5y=-46

(-8, -2)

(8, -2)

(-2, 8)

(-2, -8)

Respuesta :

jimrgrant1 jimrgrant1
  • 11-01-2019

Answer:

(- 2, - 8 )

Step-by-step explanation:

given the 2 equations

y = 4x → (1)

3x + 5y = - 46 → (2)

Substitute y = 4x into (2)

3x + 5(4x) = - 46

3x + 20x = - 46

23x = - 46 ( divide both sides by 23 )

x = - 2

substitute x = - 2 into (1)

y = 4 × - 2 = - 8

solution (- 2, - 8 )


Answer Link
ASDEI ASDEI
  • 17-01-2021

Answer:

the last one is the correct answer:)

Step-by-step explanation:

plz mark brainleist :)

Answer Link

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