PSLE
The graph shows the height of a plant from March to July.

1. What was the height of the plant in July?
2. 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 March (3) = 12 cm
Height of the plant in April (4) = 21 cm
Height of the plant in May (5) = 21 cm
Height of the plant in June (6) = 26 cm
Height of the plant in July (7) = 34 cm

Height of the plant in July (6) = 34 cm

(b)
To find the greatest increase, look for the steepest increase in the line graph.

To prove:
Increase in height from March (3) to April (4) = 21 - 12 = 9 cm
Increase in height from April (4) to May (5) = 21 - 21 = 0 cm
Increase in height from May (5) to June (6) = 26 - 21 = 5 cm
Increase in height from June (6) to July (7) = 34 - 26 = 8 cm

Period which the plant grew the least = April (4) to May (5)

Answer(s): (a) 34 cm; (b) 4 to 5