Homework Explained - Math Practice 101

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Chapter 6: Functions; Lesson 1:Identifying and Representing Functions

Independent Practice

Determine whether each relationship represented by the ordered pairs is a function. Explain.

• Question 8

(2, 2), (3, 1), (5, 7), (8, 0), (9, 1)

• Question 9

(0, 4), (5, 1), (2, 8), (6, 3), (5, 9)

• Question 10

Draw Conclusions

Joaquin receives $0.40 per pound for 1 to 99 pounds of aluminum cans he recycles. He receives$0.50 per pound if he recycles more than 100 pounds. Is the amount of money Joaquin receives a function of the weight of the cans he recycles? Explain your reasoning.

• Question 11

A biologist tracked the growth of a strain of bacteria, as shown in the graph.

a. Explain why the relationship represented by the graph is a function.

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• Question 11

b. What If?

Suppose there was the same number of bacteria for two consecutive hours. Would the graph still represent a function? Explain.

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• Question 12

Multiple Representations

Give an example of a function in everyday life, and represent it as a graph, a table, and a set of ordered pairs. Describe how you know it is a function.

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