1. Inverse Proportion – Shootout!
Students compete (1v1 in pairs or in teams, at their tables or at the front) to
answer questions the quickest.
Students could write on your whiteboard or their own.
Delete too difficult/easy question slides beforehand.
Click anywhere to start the music, then click ‘Go’ to show the question,
then click again to show the answer.
This game has sound!

2. Shootout!
Inverse Proportion

3. Correct Answer = 1pt
Fastest! = 1pt

4. Ready?
Go!

5. When 𝑥=2, 𝑦=5 𝑦 is inversely proportional to 𝑥. 𝑦=2 when 𝑥=5
Find the value of 𝑦 when 𝑥=2
When 𝑥=2,
𝑦=5

6. Ready?
Go!

7. Find the value of 𝑦 when 𝑥=10
𝑦 ∝ 1 𝑥2
𝑦=5 when 𝑥=2
Find the value of 𝑦 when 𝑥=10
When 𝑥=10,
𝑦=0.2

8. Ready?
Go!

9. Find the value of 𝑦 when 𝑥=4
𝑦 ∝ 1 𝑥
𝑦=2 when 𝑥=6
Find the value of 𝑦 when 𝑥=4
When 𝑥=4,
𝑦=3

10. Ready?
Go!

11. When 𝑥=100, 𝑦=0.5 𝑦 is inversely proportional to the square root of 𝑥.
Find the value of 𝑦 when 𝑥=100
When 𝑥=100,
𝑦=0.5

12. Ready?
Go!

13. When 𝑥=4, 𝑦=0.5 𝑦 is inversely proportional to 𝑥 squared. 𝑦=2 when 𝑥=2
Find the value of 𝑦 when 𝑥=4
When 𝑥=4,
𝑦=0.5

14. Ready?
Go!

15. When 𝑥=10, 𝑦=1 𝑦 is inversely proportional to 𝑥. 𝑦=0.5 when 𝑥=20
Find the value of 𝑦 when 𝑥=10
When 𝑥=10,
𝑦=1

16. Ready?
Go!

17. Find the value of 𝑦 when 𝑥=4
𝑦 ∝ 1 𝑥
𝑦=3 when 𝑥=64
Find the value of 𝑦 when 𝑥=4
When 𝑥=4,
𝑦=12

18. Ready?
Go!

19. When 𝑥=2, 𝑦=1.5 𝑦 is inversely proportional to 𝑥 cubed. 𝑦=12 when 𝑥=1
Find the value of 𝑦 when 𝑥=2
When 𝑥=2,
𝑦=1.5

20. Ready?
Go!

21. When 𝑥=64, 𝑦=7.5 𝑦 is inversely proportional to the cube root of 𝑥.
Find the value of 𝑦 when 𝑥=64
When 𝑥=64,
𝑦=7.5

22. Ready?
Go!

23. Find the value of 𝑦 when 𝑥=2
𝑦 ∝ 1 𝑥3
𝑦= when 𝑥=4
Find the value of 𝑦 when 𝑥=2
When 𝑥=2,
𝑦=4

24. Ready?
Go!

25. Find the value of 𝑦 when 𝑥=1
𝑦 ∝ 𝑥
𝑦=5 when 𝑥=125
Find the value of 𝑦 when 𝑥=1
When 𝑥=1,
𝑦=25

26. Ready?
Go!

27. When 𝑥=10, 𝑦=0.5 𝑦 is inversely proportional to 𝑥 squared.
Find the value of 𝑦 when 𝑥=10
When 𝑥=10,
𝑦=0.5

28. Ready?
Go!

29. When 𝑥=10, 𝑦= 1 40 𝑦 is inversely proportional to 𝑥 cubed.
Find the value of 𝑦 when 𝑥=10
When 𝑥=10,
𝑦= 1 40

31. tom@goteachmaths.co.uk Questions? Comments? Suggestions?
…or have you found a mistake!?
Any feedback would be appreciated .
Please feel free to