SOLUTION: substitution to solve the system. x-4y=4 -x+4y=-4

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Question 911299: substitution to solve the system.
x-4y=4
-x+4y=-4
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
From eq. 1,
x=4y%2B4
Substituting,
-4y-4%2B4y=-4
-4=-4
True for all x.
This is a dependent system.
If you multiply equation 1 by -1 you get equation 2.
Any solution of equation 1 is a solution of equation 2, infinitely many solutions.