Question

The equation d = 3t gives the distance, d, in meters that Liam swims with respect to time, t, in seconds.

The table gives the different distances in meters that Edgar swam with respect to time in seconds.
Time (seconds) Distance (meters)
20 64
40 128
60 192

Assume that Liam and Edgar both swim at a constant rate.

What is the rate of change for each swimmer in terms of meters per second? Who swims faster?

Be sure to label your answers with the name of the swimmer.

Answer 1

d = rt is the general equation for distance (d), rate (r) and time (t). compare this to Liam's equation to get the rate (or in other words, the speed)

for Edgar's speed, you just need to pick one row from the table. that'll give you distance and the time it took to travel that distance. use the equation d = rt, plug in d and t, then solve for r.

Answer 2

thank you