2. a. How could you distinguish between traveling west at 5 miles per hour and

traveling east at 5 miles per hour without using the words "east" and "west"

b. Four people are cycling. They each start at the same point. (0 represents their

starting point.) Plot their finish points after five seconds of cycling on a number line!

• Lin cycles at 5 meters per second

• Diego cycles at -4 meters per second

• Elena cycles at 3 meters per second