blue day – 1/8/2014 gold day – 1/9/2014. finish domain and range worksheet from last class
TRANSCRIPT
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Independent and Dependent variables
Blue Day – 1/8/2014Gold Day – 1/9/2014
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Bell Ringer
Finish domain and Range worksheet from last class.
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Agenda and News
Study of functions Independent vs. Dependent
Last day to do a schedule change is Friday, January 16, 2015.
Student Holiday – Monday, January 19, 2015
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In an Algebraic situation, equation, table, or graph, the variables (usually x and y) can be classified as either __________ or _________.
independent
dependent
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Independent Variable
The independent variable is always located on the _________ of a graph.
The independent variable is the ________________.
It is usually the ________ in a table or equation.
The independent variable STANDS ALONE (___________).
The independent variable is what happens _______.
x-axis
Input (domain)
“x”
Does not depend
FIRST
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The variable in a function whose value is subject to choice is the independent variable. The independent variable affects the value of the dependent variable.
Deciding Which is which?
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Dependent Variable
The dependent variable is always located on the _________ of a graph.
The dependent variable is the ______________.
It is usually the _______ in a table or equation.
The dependent variable DEPENDS on the ________________.
The dependent variable is what happens _______.
y-axis
Output (Range)
“y”
independent variable
2nd
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The variable in a function whose value is determined by the independent variable is the dependent variable.
Deciding Which is which?
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Notes
Changing the independent variable
Causes changes in the
Dependent variable!
The dependent variable depends on the independent variable!!!
X
Y
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Let’s Practice!
1. A student’s grade depends on how much she studies.
Independent variable:__________Dependent variable:___________
2. The height of a plant and the amount you water it.
Independent variable: ___________Dependent variable: _____________
Time studyinggrade
Amount wateredheight
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3. The amount of money you make and the number of hours you work.
Independent variable: _____________
Dependent variable:_____________
4. The number of sodas you buy and the total money spent.
Independent variable:______________
Dependent variable:_______________
5. The number of houses you can paint depends on how much time you have.Independent variable:______________Dependent variable:_______________
Hours worked
Amount of money
Number of sodasTotal money
Amount of timeNumber of houses
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Continuous DataData that is continuous is data that _________ happens. You can usually tell that your data is continuous if you are _________ something (i.e. time, distance, length, height, etc.). If your data is continuous, then you will _________ the points on your graph.
continuously
measuring
connect
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Discrete DataYou can tell that your data is discrete if you are ________________________ (i.e. number of people, cars, or stories of a building). If your data is discrete, then you will _____________ the points on your graph.
counting or measuring in whole numbers
NOT connect
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