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Question
The following line graph shows the population of rabbits in subsequent years:
For how many years has the population of rabbits increased at a fixed rate?
The following line graph shows the population of rabbits in subsequent years:
For how many years has the population of rabbits increased at a fixed rate?
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Solution
The correct option is D Four
The tabular representation of the given data set is:
Year
Population
2015
3
2016
5
2017
6
2018
7
2019
8
2020
9
Increase of population in the respective years:
Year Interval
Increase in Population
2015 - 2016
5 - 3 = 2
2016 - 2017
6 - 5 = 1
2017 - 2018
7 - 6 = 1
2018 - 2019
8 - 7 = 1
2019 - 2020
9 - 8 = 1
Hence, for four years, i.e., 2016−2017,2017−2018,2018−2019and2019−2020, the rate of increase of population is 1 rabbit per year.
Hence, four years is the required answer.
The tabular representation of the given data set is: Year Population
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 6 |
| 2018 | 7 |
| 2019 | 8 |
| 2020 | 9 |
Increase of population in the respective years: Year Interval Increase in Population
| 2015 - 2016 | 5 - 3 = 2 |
| 2016 - 2017 | 6 - 5 = 1 |
| 2017 - 2018 | 7 - 6 = 1 |
| 2018 - 2019 | 8 - 7 = 1 |
| 2019 - 2020 | 9 - 8 = 1 |
Hence, for four years, i.e., 2016−2017,2017−2018,2018−2019and2019−2020, the rate of increase of population is 1 rabbit per year.
Hence, four years is the required answer.
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