Sc.8.N.1.1

Paco's daughter will be participating in an upcoming dance recital. She will require a different costume for each dance she plans to performs.
c = the number of costumes Paco's daughter will require
d = the number of dances Paco's daughter plans to perform
Which of the variables is independent?

• c
• d

• the independent variable is distance
• the independent variable is d=25 t
• the dependent variable is time
• the dependent variable is distance

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NGSS.MS-PS3-1

• The dependent variable is total cost
• The dependent variable is weight
• The independent variable is total cost
• The independent variable is cost of a package

Priya streams movies through a company that charges her a $5 monthly fee plus $1.50 per movie What is the dependent variable?

• the number of movies she rents
• the company that she rents from
• the money it costs
• There isn't one

A food service worker earns $12 per hour. How much money, m, does the worker earn on a shift of h hours? Identify the dependent variable.

• money
• hours

A large 2-topping pizza, L, costs $2 more than a medium 3-topping pizza, m. What is the independent variable?

• L, large pizza
• M, medium pizza

On a graph, which axis shows the dependent variable?

• x-axis
• y-axis
• neither
• it changes

Time is the _____________ variable.

• dependent
• independent

the variable that is kept the same to make sure results are caused by the thing being tested

• independent variable
• dependent variable
• control variable

Scientific Question:  Does playing video games improve reaction time?
What is the controlled variable?

• playing video games
• reaction time
• type of video game