alfrxdo5 alfrxdo5

22-01-2021
Mathematics

contestada

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

Respuesta :

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

22-01-2021

Answer:

(3, -4)

Step-by-step explanation:

Answer Link

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