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A track coach creates an obstacle course for his team. The coach plots the locations of
three obstacles on the coordinate
plane shown below.
4
b3
2
Obstacle A
W-
-E
▬▬
-7-6-5-4-3-2-1
1 2 3
Obstacle C Obstacle B
-2
KEY
3 yards
3 yards
Each unit on the coordinate plane represents 3 yards. A student starts at Obstacle A, then
runs south to Obstacle B, and then runs west to Obstacle C. What is the total distance,
in yards, the student runs to get from Obstacle A to Obstacle C?
Show your work.