FUNCTIONS: INDEPENDENT& DEPENDENT VARIABLES FROM TABLES/GRAPHS

​FUNCTIONS:INDEPENDENT AND DEPENDENT VARIABLES

By Mariah Brown

Learning goals:

• I can identify independent and dependent variables. 

• I can write an equation in function notation and evaluate a function for given input values.

UNDERSTANDING FUNCTIONS

Range
Output/Dependent Variable
Y

ROY

Domain
Input/Independent Variable
X

DIX

IN DIX and ROY which variable (letter) is INDEPENDENT?
WHICH ONE HAS THE LETTER I IN IT?????

​

LETS TALK ABOUT IT

IN DIX and ROY which variable (letter) is INDEPENDENT?
WHICH ONE HAS THE LETTER I IN IT?????

​

LETS TALK ABOUT IT

THE LINE THAT GOES UP AND DOWN IS YOUR Y

THE LINE THAT GOES LEFT TO RIGHT IS YOUR X
THEN THINK ABOUT DIX and ROY

​

LETS TALK ABOUT IT

THE LINE THAT GOES UP AND DOWN IS YOUR Y

THE LINE THAT GOES LEFT TO RIGHT IS YOUR X
THEN THINK ABOUT DIX and ROY

​

LETS TALK ABOUT IT

Vocab:

• Independent Variable: input of the function (x)

• Dependent Variable: output of the function (y)

Multiple Choice

Which of the following is the label for the independent variable?

• Money Collected

• Raising Money

• Boxes Sold

• None of the above

Multiple Choice

On a graph, which axis shows the independent variable?

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

Multiple Choice

On a graph, which axis shows the dependent variable?

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

Multiple Choice

In the table, Bubbles is the ______________.

• independent variable

• dependent variable

Multiple Choice

Name the INDEPENDENT variable from the table below.

• words
• minutes

Multiple Choice

Which label best describes the independent quantities shown in the table?

• Number of tickets (t)
• Cost (c)

Multiple Choice

Is this table a function or not a function? 

• Function
• Not a Function

Multiple Choice

Which ordered pair could you add to the following list of points to create a function?  (3, 5) (4, 9) (2, 5) 

• (3, 7)
• (4, 1) 
• (1, 9)
• (2, 6)

Multiple Choice

Which label best describes the dependent quantities shown in the table?

• Number of tickets (t)
• Cost (c)

Multiple Choice

What is the dependent variable?

• Rate of Pay

• Number of Hours

• Amount Earned

• Number of Minutes

​COMPLETE IXL AND MISSING WORK