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`5 x + 8 y = -5`
`y = -2/3 x -2/3`

Is `(-1,0)` a solution to the system above?

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   x  √  (   ) π ∞ DNE
( ) ( ] [ ) [ ] —∞ ∞ ∪ DNE
< > ≤ ≥ or All Real Numbers DNE
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