lucky1625
lucky1625 lucky1625
  • 04-02-2020
  • Mathematics
contestada

How to solve this system using substitution
3x-6y=-6
-2x+y=4

Respuesta :

emiliaa11
emiliaa11 emiliaa11
  • 04-02-2020
Your x and y intersection is: (-2,0).
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Answer Link
josshyaby
josshyaby josshyaby
  • 04-02-2020

Answer:

Step-by-step explanation:

3x-6y=-6..........(1)

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

Making y as subject in (2)

y = 2x + 4.......(3)

Substituting (3) into (1)

3x - 6(2x + 4) = -6

3x - 12x - 24 = -6

-9x = -6 + 24

-9x = 18

x = 18/-9

x = -2

Substitute x = -2 into (3)

y = 2x + 4

y = 2(-2) + 4

y = -4 +4

y = 0

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