Math Project # 7 - Algebra

Henri has been walking every day and has increased his speed. He now walks at a rate of 2 meters per second. Emile has not been practicing but finds that he can still walk at a rate of 2.5 meters per second. Emile and Henri decide to have another race. Emile gives his brother a head start of 40 meters.

1. Write an equation for each brother that shows the relationship between distance walked and time.

Direction : Use graphs, tables, or your equations to answer questions 2-4. In each question, sketch the section of graph (with the sclae marked) or the table and indicate where you found the answers, or record the computational work you do.

2. Find each brother's distance at 60 seconds.

3. Find the time when Emile catches up with his brother.

4. What are the y-intercepts? Explain how you can find the y-intercepts in each representation-table, graph, and equation.