OPEN-ENDED QUESTION
When Jane exercised on an elliptical machine, her initial heart rate is 90 beats per minute. She warms up at this rate for 5 minutes. Over the next 5 minutes, she gradually increases to 150 beats per minute. She maintains that rate for 15 minutes before gradually decreasing back to her original heart rate at the end of her 30 minute workout.
What are the two quantities in the scenario and identify the dependent and independent variablea.
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Answer
Final Answer: The two quantities in the scenario are time and heart rate. Time is the independent variable and heart rate is the dependent variable.
Step 1 ：Identify the two quantities in the scenario: time and heart rate.
Step 2 ：Identify the independent variable: Time is the independent variable because it is not dependent on any other variable in the scenario. It progresses forward regardless of what Jane's heart rate is.
Step 3 ：Identify the dependent variable: Jane's heart rate is the dependent variable because it changes based on the amount of time she has been exercising.
Step 4 ：Final Answer: The two quantities in the scenario are time and heart rate. Time is the independent variable and heart rate is the dependent variable.
