Independent and Dependent Variables

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Presentation transcript:

Independent and Dependent Variables 6th

Example 2B: Identifying Independent and Dependent Variables Identify the independent and dependent variables in the situation. The height of a candle decrease d centimeters for every hour it burns. The height of a candle depends on the number of hours it burns. Dependent: height of candle Independent: time

Example 2A: Identifying Independent and Dependent Variables Identify the independent and dependent variables in the situation. A painter must measure a room before deciding how much paint to buy. The amount of paint depends on the measurement of a room. Dependent: amount of paint Independent: measurement of the room

Independent V. Dependent Controlled Vary at known rate Cause X values Input Measured Vary at unknown rate Effect Y values Output

Check It Out! Example 2a Identify the independent and dependent variable in the situation. A company charges $10 per hour to rent a jackhammer. The cost to rent a jackhammer depends on the length of time it is rented. Dependent variable: cost Independent variable: time

Check It Out! Example 2b Identify the independent and dependent variable in the situation. Camryn buys p pounds of apples at $0.99 per pound. The cost of apples depends on the number of pounds bought. Dependent variable: cost Independent variable: pounds

Graphing Dependent v. Independent Variables

Example Time to roll down the ramp 5 10 15 20 25 Height of a ramp (cm)