Section B Section B Checkpoint

Problem 1

Elena is riding her bike around the park at a constant pace. She completes 5 laps in 20 minutes.

Write an equation that shows the time in minutes it takes Elena to complete x laps at the same pace. (If you get stuck, consider completing the table.)

number of laps time in minutes
5 20
10
11
1
xx
Show Solution
Solution
y=4xy=4x (where y represents time in minutes)
Show Sample Response
Sample Response
y=4xy=4x (where y represents time in minutes)

Problem 2

Hawaiians have a unique system for measuring lengths. Two of their units are called “muku” and “anana.”

The equation a=0.75ma = 0.75m gives the relationship between a length measured in muku, mm, and the same length measured in anana, aa.

  1. How many anana are in 24 muku?
  2. How many muku are in 24 anana?
Show Solution
Solution
  1. 18 anana
  2. 32 muku
Show Sample Response
Sample Response
  1. 18 anana
  2. 32 muku