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Use the substitution method to solve the system of equation.choose the correct ordered pair. Y=10x-9 y=x+18

Respuesta :

JaniceneshiaSmith15
y=10x-9 , y=x+18 
10x-9=x+18 
9x-9=18 
9x=27 
x=3 

y=10x-9 
y=10 (3)-9 
y=30-9 
y=21 

B. (3,21)Source(s):
My Brain 
AmandaAldama

Answer: (3,21)

Step-by-step explanation:

Still correct answer on APEX as of 4/29/19.

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