Time (seconds)
Emile's Distance (m) Henri's Distance (m)
0
5
10 15 20 25 30 35
40 1
100
95
90
85
80
75
70
65
Distance (meters)
60
55
50
45
40
35
30
25
20
15
10
5
0
5
10
15
20
25
30
35
40
45
Time (seconds)
2
3. Write an equation representing the relationship and explain what each variable represents
Distance (Henri) = _______________________ Distance (Emile)= _____________________
B 1. How far does Emile walk in 20 seconds? ____________________
2. After 20 seconds, how far apart are the brothers? __________________
How did you find this on the table? _______________________________________________
___________________________________________________________________________
How did you find this on the graph? _______________________________________________
___________________________________________________________________________
3. Is the point (26, 70) on either graph? _____________ Explain how you knew ______________
___________________________________________________________________________
C. How can you determine which of the two lines will be steeper
1. from a table of the data? _______________________________________________________
2. from an equation? ____________________________________________________________
D. 1. At what points do the two boys' lines cross the y­axis? Henri? _________ Emile?__________
2. What information do these points represent in terms of the race? _______________________
3. How can these points be found in a table? _________________________________________
In an equation? ____________________________________________________________
3