Plug in the ordered pairs First
Lets try (2,-9) first
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(5*2) - (-9/3) = 13
10 - (-3) = 13
These two points (2,-9) work in the expression
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Now we try (3,-6)
Plug in the numbers
(5*3) - (-6/3) = 13
15 - (-2) = 17
These Two points (3,-6) do not work
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Your answer is C. "The First is a solution, but the second is not"