Question

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.

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
@cj49

Answer 1

For Henry, you know that y=mx+b, where m is the slope or henry's rate. So what's the value of m (rate of Henry)?

Now you would want to find the rate/slope of Larry.
Take two points and apply the slope formula, which will be \(\sf \Large rate=\frac{\Delta\text{ laps completed}}{\Delta time}\)