The table below shows a proportional relationship between the total amount of time it takes a swimmer to swim different numbers of laps.
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What is the constant of proportionality?
3.2
2.4
1.6
0.6
The constant of proportionality is found by dividing the total time by the number of laps.
For example, for 6 laps, the total time is 4.8 seconds.
4.8 / 6 = 0.8
Since all the values of total time divided by the number of laps equal 0.8, the constant of proportionality is 0.8.
Therefore, the correct answer is 0.8.