Concept explainers
Open-Ended Give one example of a proportion. Describe the means and the extremes of the proportion. Explain how you know it is a proportion. Give one non-example of a proportion. Explain how you know it is not a proportion.
To explain proportionality and non-proportionality.
Explanation of Solution
Proportion:
When two ratios are equal, it is proportional.
For example,
Here, simplifying
Therefore, we say that these fractions are proportional.
Non-proportion:
When the ratios are not equal, it is non-proportional.
For example,
Here, both the expressions are in a simplified form but they are not equal.
Therefore, we say that these fractions are non-proportional.
Chapter 2 Solutions
High School Math 2012 Common-core Algebra 1 Practice And Problem Solvingworkbook Grade 8/9
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