7. The set of ordered pairs (1, 19), (2, 23), (3, 23), (4, 29), (5, 31) represents the number of tickets sold for a fundraiser. The input values represent the day and the output values represent the number of tickets sold on that day. a. Make an arrow diagram that represents the relation. b. Is the relation a function? Explain. 8. Does the relation shown below represent a function? Explain. (-2, 2), (-7, 1), (-3, 9), (3, 4), (-9, 5), (-6,8) 9. Is the relation shown in the table a function? Explain. 10. Construct Arguments During a chemistry experiment, Sam records how the temperature changes over time using ordered pairs (time in minutes, temperature in °C). (0, 15), (5, 20), (10, 50), (15, 80), (20, 100), (25, 100) Is the relation a function? Explain. MP3 11. Reasoning Taylor has tracked the number of students in his grade since third grade. He records his data in the table below. Is the relation a function? Explain. MP2 Grade 3 4 5 เก 6 7 8 00 # People 726 759 748 792 804 835 Input Outp 4 1 00 3 8 4 8 00 20°C 12. James raises chickens. He tracks the number of eggs his chickens lay at the end of each week. Is this relation a function? Explain. Week 1 2 3 4 5 Eggs 7 13 13 22 26 5 นา 4

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