1) Is this a function? Y= 1, 2, 2, 4, 5 X= 3, 4, 8, 9, 8  a) No b) Yes c) Maybe 2) Is this not a function? Y= 3, 5, 9, 13, 14 X= 1, 9, 10, 12, 13 a) No b) Yes c) Maybe 3) Is this a function? a) No b) Yes c) Maybe 4) Is this a function? Y= 123, 240, 372 X= 23, 23, 50 a) No b) Yes c) Maybe 5) Is this a function? Y= 15, 22, 24, 23 X= 24, 4, 17, 24 a) No b) Yes c) Maybe 6) Is this a function? Y= 2, 2, 3, 4, 4 X= 5, 4, 6, 12, 1 a) No b) Yes c) Maybe 7) Is this not a function? Y= 72, 98, 108, 112 X= 2, 7, 10, 10 a) No b) Yes c) Maybe 8) Is this a function? Y= 3, 3, 5, 7, 3 X= 5, 9, 12, 5, 11 a) No b) Yes c) Maybe 9) Is this a function? Y= 1, 2, 3, 4, 5 X= 5, 4, 3, 2, 1 a) No b) Yes c) Maybe 10) Is this a function? Y= 101, 114, 118, 119 X= 97, 111, 122, 111 a) No b) Yes c) Maybe 11) Is this a function? Y= 5, 3, 5, 6, 1 X= 12, 5, 12, 6, 7 a) No b) Yes c) Maybe 12) Is this not a function? Y= 5, 5, 7, 7, 9 X= 12, 13, 14, 15, 16 a) No b) Yes c) Maybe 13) Is this a function? Y= 2, 5, 6, 9, 12 X= 3, 8, 3, 12, 6 a) No b) Yes c) Maybe 14) Is this a function? Y= 178, 188, 198 X= 450, 320, 455 a) No b) Yes c) Maybe 15) Is this a function? Y= 13, 13, 13, 15, 18 X= 2, 3, 8, 12, 13 a) No b) Yes c) Maybe

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