x+5y=10
-2x-10y=-20
Answers:
Multiply the first equation by 2:
..2x + 10y = 20
- 2x - 10y = -20
---------------------
....0
Since both equations are the same and can reduce to 0 = 0, the systems are dependent.
In other words, if you multiply the first equation by -2, you get the second equation. This means there is not a unique solution, and the system is dependent.
Good luck in your studies,
~ Mitch ~
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