Question: 9. Which of these graphs represents a function? Justify your answer. Write the domain and range for each graph. a) Heights and Ages of

9. Which of these graphs represents a function? Justify your answer. Write

9. Which of these graphs represents a function? Justify your answer. Write the domain and range for each graph. a) Heights and Ages of 8 Students Height (cm) 180- 170- 160 30 13 15 17 Age (years) b) Number of Bicycles at School 30 Number of bicycles 20 10- 0 08:00 16:00 Time

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