SOLUTION: Use linear combinations to solve the system of linear equations. y=x-9 x+8y=0

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Question 176236: Use linear combinations to solve the system of linear equations.
y=x-9
x+8y=0
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Use linear combinations to solve the system of linear equations.
y=x-9
x+8y=0
---------------
Rearrange:
x - y = 9
x + 8y = 0
-------------------
Subtract 1st from 2nd to solve for "y":
9y = -9
y = -1
-----------------------
Substitute to get x = y + 9 = -1+9 = 8
------------------------------------
Ans: (8,-1)
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Cheers,
Stan H.