# Unit 5: Moving Straight Ahead Name Investigation 2 Crossing the Line

 Date 12.05.2016 Size 19.72 Kb. #38724
Unit 5: Moving Straight Ahead Name _______________________

Investigation 2.2 – Crossing the Line

 Time in Seconds Emile Henri 0 5 10 15 20 25 30 35 40

1. 1. Make a table showing the distance from the starting line at several different times during the first 40 seconds. How can the table be used to find the length of the race?

2. Graph the time and distance from the starting line on the same set of axes. How can the graph be used to find the length of the race? 3. Write and equation representing the relationship between time and distance. Explain what each number and each variable represents.
 Emile: Henri:

4. How does the walking rate of each brother show up in the graph, the table, and the equation?
B) 1. How far does Emile walk in 20 seconds?

2. After 20 seconds, how far apart are the brothers? How do is this distance shown on the table and on the graph?

3. Is the point (26, 70) on either graph?

4. When will Emile overtake Henri? Explain.

1. How can you determine which of two lines will be steeper from

1. A table of data? 2. An equation?

1. 1. At what points do Emile’s and Henri’s graphs cross the y-axis?

1. What information do these points represent in terms of the race?

2. How can these points be found in a table? In an equation?

Moving Straight Ahead Exploring Linear Relationships with Graphs and Tables