Kari got a slingshot for her birthday, and she was learning to use it by launching a rubber ball in a local park. Kari noticed that the ball traveled farther when she pulled the sling back more. She wondered how much farther the ball would travel for each additional inch she pulled the sling back. Kari launched the ball from the slingshot six times and measured how far the ball traveled each time. On the first two launches, she pulled the sling back four inches. On the next two launches, she pulled the sling back five inches. On the final two launches, she pulled the sling back six inches. Which of the following was a dependent variable in this experiment?
Athe distance the sling was pulled back
Bthe distance the ball travelled