Use the substitution method to solve the system of equation.choose the correct ordered pair. Y=10x-9 y=x+18
2 answers:
<h2>
Answer: (3,21) </h2>
Step-by-step explanation:
Still correct answer on APEX as of 4/29/19.
<span>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)</span><span>Source(s): My Brain </span>
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