SOLUTION: could you please help me solve this? I have no clue at all how to do this. Thanks solve the system of linear equations using substitution: y=2x y=-4x+8

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: could you please help me solve this? I have no clue at all how to do this. Thanks solve the system of linear equations using substitution: y=2x y=-4x+8      Log On


   

Question 270355: could you please help me solve this? I have no clue at all how to do this.
Thanks
solve the system of linear equations using substitution:
y=2x
y=-4x+8
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
solve the system of linear equations using substitution:
y=2x
y=-4x+8
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Since they both equal y, sub for y in either equation.
2x = -4x + 8
6x = 8
x = 4/3
y = 8/3