PSLE The graph shows the height of a plant from May to September.
- What was the height of the plant in September?
- During which period did the plant have no change in height? Give your answer in numbers. (Eg Jan to Feb = 1 to 2)
(a)
Height of the plant in May (5) = 21 cm
Height of the plant in June (6) = 27 cm
Height of the plant in July (7) = 27 cm
Height of the plant in August (8) = 39 cm
Height of the plant in September (9) =
47 cm Height of the plant in September (8) = 47 cm
(b)
To find the greatest increase, look for the steepest increase in the line graph.
To prove:
Increase in height from May (5) to June (6) = 27 - 21 = 6 cm
Increase in height from June (6) to July (7) = 27 - 27 =
0 cm Increase in height from July (7) to August (8) = 39 - 27 = 12 cm
Increase in height from August (8) to September (9) = 47 - 39 = 8 cm
Period which the plant grew the least = June (6) to July (7)
Answer(s): (a) 47 cm; (b) 6 to 7