Math 9 · Unit 10: Graphs · Cambridge Lower Secondary Maths Stage 9

Questions

1. 1. The graph shows the distance travelled by a cyclist. How far has the cyclist travelled after 50 seconds?

   • 400 m
   • 450 m
   • 350 m
   • 50 m
   Check

2. 2. The graph shows the distance travelled by a cyclist. What is the gradient, and what does it tell you?

   • 1/8: the cyclist travels 1 metre every 8 seconds
   • 50: the cyclist rides for 50 seconds
   • 400: the cyclist travels 400 metres per second
   • 8: the cyclist travels at 8 metres per second
   Check

3. 3. The graph shows the distance travelled by a cyclist. The cyclist travels y metres in t seconds. Which equation is the equation of the line?

   • y = 400t
   • y = t/8
   • y = t + 8
   • y = 8t
   Check

4. 4. The cyclist travels y metres in t seconds, and the line has the equation y = 8t. How far does the cyclist go in 70 seconds?

   • 560 m
   • 3500 m
   • 78 m
   • 8.75 m
   Check

5. 5. The graph shows the cost of cloth. What is the cost of 2.5 metres of cloth?

   • $12.50
   • $18
   • $15
   • $10
   Check

6. 6. The graph shows the cost of cloth. What is the cost in dollars per metre?

   • $18 per metre
   • $0.17 per metre
   • $6 per metre
   • $3 per metre
   Check

7. 7. The graph shows the cost of cloth. The cost of x metres is d dollars. Which equation fits the line?

   • d = 15x
   • d = 6x
   • d = x + 6
   • x = 6d
   Check

8. 8. The graph shows the cost of cloth, $6 per metre. What is the cost of 8.5 metres?

   • $48
   • $51
   • $14.50
   • $54
   Check

9. 9. The graph shows the cost of cloth, $6 per metre. Sofia pays $30. How many metres does she buy?

   • 4.5 m
   • 6 m
   • 5 m
   • 180 m
   Check

10. 10. The graph converts dollars to dinars. How many dinars can you buy for 40 dollars, and for 20 dollars?

    • 15 dinars and 7 dinars
    • 14 dinars and 7 dinars
    • 40 dinars and 20 dinars
    • 7 dinars and 14 dinars
    Check

11. 11. The graph converts dollars to dinars. How many dinars is 1 dollar worth?

    • 2.86
    • 0.7
    • 0.35
    • 3.5
    Check

12. 12. The graph converts dollars to dinars. If x dollars are worth y dinars, which equation fits the line?

    • y = 0.35x
    • y = 35x
    • y = x + 0.35
    • x = 0.35y
    Check

13. 13. The graph converts dollars to dinars: 1 dollar is worth 0.35 dinars. How many dinars can you buy with 93 dollars?

    • 32.55
    • 93.35
    • 35.55
    • 265.71
    Check

14. 14. The graph converts dollars to dinars: 1 dollar is worth 0.35 dinars. How many dollars are worth 700 dinars?

    • 1750
    • 700.35
    • 245
    • 2000
    Check

15. 15. This graph shows the temperature inside a greenhouse. Complete the table by putting the temperature in each empty square.

    Fill the blanks with these.

    • 20
    • 14
    • 17
    • 18
    • 15
    Check

16. 16. The graph shows the temperature inside a greenhouse. What is the gradient of the line, and what does it tell you?

    • −0.6: the temperature falls by 0.6 °C every hour
    • 0.6: the temperature rises by 0.6 °C every hour
    • 20: the temperature starts at 20 °C
    • −6: the temperature falls by 6 °C every hour
    Check

17. 17. The graph shows the temperature inside a greenhouse. The temperature is y °C after t hours. Which equation fits the line?

    • y = 20 − 0.6t
    • y = 0.6 − 20t
    • y = 20t − 0.6
    • y = 20 + 0.6t
    Check

18. 18. The graph shows the temperature inside a greenhouse, y °C after t hours. It keeps falling in the same way. What is the temperature after 12 hours?

    • 12.8 °C
    • 19.4 °C
    • 13.6 °C
    • 7.2 °C
    Check

19. 19. The graph shows the population of a town. What was the population at the start, after 20 years and after 30 years?

    • 15 000, 25 000 and 29 000
    • 15 000, 23 000 and 27 000
    • 10 000, 20 000 and 30 000
    • 15, 23 and 27
    Check

20. 20. The graph shows the population of a town. What is the annual rate of increase of the population?

    • 400 people a year
    • 15 000 people a year
    • 12 000 people a year
    • 4000 people a year
    Check