Concept explainers
To identify: Independent and dependent variables in the relationship.
Answer to Problem 3LC
Independent variable: Number of times you brush your teeth,
Dependent variable: The amount of toothpaste remaining in a tube.
Explanation of Solution
Given information: The amount of toothpaste in a tube decreased each time you brush your teeth.
Identify: The amount of toothpaste remaining in a tube depends on the number times you brush your teeth. The number of times you brush your teeth is independent. The amount of tooth paste remaining is dependent because it depends on the number of times you brush your teeth.
Independent variable: Number of times you brush your teeth,
Dependent variable: The amount of toothpaste remaining in a tube.
Chapter 4 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
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