alfrxdo5
alfrxdo5 alfrxdo5
  • 22-01-2021
  • Mathematics
contestada

Solve the system by substitution.
y = -2.x
y = -9x + 21

Respuesta :

bobrowder7
bobrowder7 bobrowder7
  • 22-01-2021

since y=-2x, we can substitute into the second equation to get:

-2x=-9x+21

add 9x

7x=21

divide by 7

x=3

Answer Link
mayabrown0
mayabrown0 mayabrown0
  • 22-01-2021

Answer:

(3, -4)

Step-by-step explanation:

Answer Link

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