Proportional Relationships Day 9

Solving Problems about Proportional Relationships

Lesson 9

Objective:

Today I will decide if we should use a proportional relationship so that I can write an equation. I know I am successful when I can complete Cool Down 9 to earn a 4.

What Do You Want to Know?

• Consider the problem: A person is running a distance race at a constant rate. What time will they finish the race?

• What information would you need to be able to solve the problem?

Open Ended

Consider the problem: A person is running a distance race at a constant rate. What time will they finish the race?

Open Ended

What information would you need to be able to solve the problem?

Moderating Comments

A company is hiring people to read through all the comments posted on their website to make sure they are appropriate. Four people applied for the job and were given one day to show how quickly they could check comments.

Person 1 worked for 210 minutes and checked a total of 50,000 comments.

Person 2 worked for 200 minutes and checked 1,325 comments every 5 minutes.

Person 3 worked for 120 minutes, at a rate represented by c=331t,where c is the number of comments checked and t is the time in minutes.

Person 4 worked for 150 minutes, at a rate represented by t=3800c.

Open Ended

Order the people from greatest to least in terms of total number of comments checked.

Open Ended

Order the people from greatest to least in terms of how fast they checked the comments.