The equation y = 1.6x represents the number of laps Henry can swim over time, where y is the number of laps and x is time in minutes. The table shows the number of laps Larry can swim over time.

Question

How many laps can each boy complete per minute, and who can swim laps at a faster rate?

Henry:
laps per minute

Larry:
laps per minute

The boy who swims at a faster rate is
. (Type H for Henry or L for Larry)


Larry
Time (min) 2.5 4 5.5 8
Laps completed 4.5 7.2 9.9 14.4

Answer 1

Assuming the data for Larry is linear,
slope = (14.4 - 9.9)/(8-5.5)
= 1.8

Larry's equation would be y = 1.8x

So Henry can do 1.6 laps per minute
and Larry can do 1.8 laps per minute

so who do you think can swim faster?

Answer 2

Larry