Year 9 direct and inverse proportion quiz to download as PDF

This Year 9 direct and inverse proportion quiz has 10 short questions for pupils aged 13-14. Type your answer, check it straight away and read the explanation when you get one wrong.

Year 9 direct and inverse proportion quiz: the 10 questions

y = 6x. Find y when x = 4.
y is directly proportional to x, y = 10 when x = 2. Find k.
y = 30/x. Find y when x = 6.
xy = 20. If x = 4, what is y?
3 pens cost £2.10. Cost of 1 pen (£)?
If x doubles in direct proportion, y ...?
If x doubles in inverse proportion, y ...?
2 workers take 12 days. 6 workers take how many days?
Is y = x + 1 a direct proportion? (yes or no)
Write y is inversely proportional to x as an equation using k.

How to use this Year 9 direct and inverse proportion quiz

First, answer every question without a calculator unless the question says so. Then check your answer and read the short explanation. If you get fewer than 7 right, revise the direct and inverse proportion lesson and try again later. After that, try the multiple choice questions or the direct and inverse proportion worksheet.

Finally, take this quiz again before a test, because quick retrieval helps you remember. Moreover, all the pages of this chapter work together, so you can move between them at any time. For example, many pupils read the lesson on Monday, practise on Wednesday and test themselves on Friday.