PSLE
The graph shows the height of a plant from February to June.

1. What was the height of the plant in May?
2. During which period did the plant grow the least? Give your answer in numbers. (Eg Jan to Feb = 1 to 2)

(a)
Height of the plant in February (2) = 15 cm
Height of the plant in March (3) = 20 cm
Height of the plant in April (4) = 23 cm
Height of the plant in May (5) = 29 cm
Height of the plant in June (6) = 34 cm

Height of the plant in May (5) = 29 cm

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

To prove:
Increase in height from February (2) to March (3) = 20 - 15 = 5 cm
Increase in height from March (3) to April (4) = 23 - 20 = 3 cm
Increase in height from April (4) to May (5) = 29 - 23 = 6 cm
Increase in height from May (5) to June (6) = 34 - 29 = 5 cm

Period which the plant grew the least = March (3) to April (4)

Answer(s): (a) 29 cm; (b) 3 to 4