The height of a watercress seedling over six days is shown in the diagram below. (a) The plant grows steadily between A and B. It does not grow during two periods. Identify these two periods from the graph. Period 1: Period 2: (b) Find the slope of AB = (c) Find the slope of CD = (d) Janet says that the seedling grows at the same rate in the two growing periods. Do you agree with Janet? Give a reason for your answer. Answer: Reason: (e) Describe the growth of the seedling over the six days.

Photo AI

The height of a watercress seedling over six days is shown in the diagram below - Junior Cycle Mathematics - Question 15 - 2012

Question 15

The height of a watercress seedling over six days is shown in the diagram below. (a) The plant grows steadily between A and B. It does not grow during two periods. ... show full transcript

Worked Solution & Example Answer:The height of a watercress seedling over six days is shown in the diagram below - Junior Cycle Mathematics - Question 15 - 2012

Step 1

Identify these two periods from the graph.

96%

114 rated

Answer

Period 1: B to C Period 2: D to B

Step 2

Find the slope of AB =

99%

104 rated

Answer

To find the slope of segment AB, we use the formula:

\text{slope} = \frac{\text{rise}}{\text{run}} = \frac{1}{2} = 0.5

Step 3

Find the slope of CD =

96%

101 rated

Answer

To find the slope of segment CD, we use the formula:

\text{slope} = \frac{\text{rise}}{\text{run}} = \frac{0.5}{1} = 0.5

Step 4

Do you agree with Janet? Give a reason for your answer.

98%

120 rated

Answer

Answer: Yes. Reason: The slopes of the lines are the same.

Step 5

Describe the growth of the seedling over the six days.

97%

117 rated

Answer

The seedling grows steadily for two days.

It then stops for a day.

Then it grows for a day.

Finally, it stops growing for two more days.

Join the Junior Cycle students using SimpleStudy...

97% of Students

Report Improved Results

98% of Students

Recommend to friends

100,000+

Students Supported

1 Million+

Questions answered

;