1 Southwest Vacations does not charge any fees or penalties to modify your vacation package. 2  If your travel plans change, the right to a refund is limited and will be determined in conjunction with the terms and conditions listed herein.
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They only differ by a single number. One of the functions is a one to one function, and the other is not. Show Answer. A one to one function is a function in which every element in the range corresponds with one and only one element in the domain. So, #1 is not one to one because the range element. 5 goes with 2 different values in the range (4 and 11).