Worked Example 2: Inverse Proportion
Part of Proportion · GCSE GCSE Mathematics revision
This study notes covers Worked Example 2: Inverse Proportion within Proportion for GCSE Mathematics. Revise Proportion in Number for GCSE Mathematics with 12 exam-style questions and 22 flashcards. Use this page as part of a wider topic revision path rather than treating it as an isolated fact. It is section 8 of 16 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 8 of 16
Practice
12 questions
Recall
22 flashcards
Worked Example 2: Inverse Proportion
y is inversely proportional to x. When x = 4, y = 6. Find the value of y when x = 12.
Solution
y ∝ 1/x, so y = k/x
When x = 4, y = 6: 6 = k/4
k = 6 × 4 = 24
So y = 24/x
When x = 12: y = 24/12 = 2
Answer: y = 2
Keep building this topic
Read this section alongside the surrounding pages in Proportion. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Proportion
y is directly proportional to x. Which equation could represent this relationship?
Explain how you can tell from a graph whether two quantities are in direct or inverse proportion.
Quick Recall Flashcards
12 questions on Proportion — practise free
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