SOLUTION: I need help on solving the linear system -4x+3y=1 3x+y=9 using substitution.

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Question 564328: I need help on solving the linear system -4x+3y=1 3x+y=9 using substitution.
Answer by ad_alta(240) About Me  (Show Source):
You can put this solution on YOUR website!
There are several ways to do this, so I'll show one and let you figure out the others. Since -4x+3y=1, y=1/3+(4/3)x. We can substitute into the second equation and get 3x+1/3+(4/3)x=9. Thus, x=2 and y=3.