Green Bridge Learning Resource For Proportion

Overview

Proportion describes how two quantities change together. In direct proportion, doubling one doubles the other; in inverse proportion, doubling one halves the other. Writing these relationships with algebra lets you find any unknown value precisely.

In this lesson (Extended tier) you will express direct and inverse proportion in algebraic form, find the constant of proportionality, and use the relationship to calculate unknown quantities.

Lesson Evaluation

Congratulations on completing the lesson on Proportion. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.

You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.

Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.

y is directly proportional to x, and y = 12 when x = 3. Find k. A. 4 B. 9 C. 15 D. 36 Answer: A
Using y = 4x, find y when x = 7. A. 11 B. 21 C. 28 D. 47 Answer: C
y is inversely proportional to x, and y = 6 when x = 2. Find k. A. 3 B. 4 C. 8 D. 12 Answer: D
Using y = 12/x, find y when x = 4. A. 3 B. 4 C. 8 D. 48 Answer: A
In inverse proportion, as x increases, y: A. increases B. decreases C. stays the same D. doubles Answer: B