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LeoMessi
 3 years ago
Best ResponseYou've already chosen the best response.0because you are dealing with absolute value, consider when Y+9 is greater than 4, and when Y+9 is less than 4

LeoMessi
 3 years ago
Best ResponseYou've already chosen the best response.0solve for Y+9 = 4 and Y+9 = 4, those will be the two points at which your inequality will not be satisfied, therefore any value greater than that found for Y+9=4 will be a solution, and any value less than that found for Y+9=4 will be a solution, there you have the 2 boundaries
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