Inputs and outputs
Equations for functions
Graphs of functions
Variables
100
Add 3, then subtract 2 Inputs: 0,2,4,6
Outputs: 1,3,5,7
100
What is the equation for this function?
y= 3x-4
100
Is this linear or non- linear?
Linear
100
What is my independent and dependent variable?
x: independent
y: dependent
200
Multiply by 2 Inputs: 3,5,7,9
Outputs: 6,10,14,18
200
What is the equation for this function?
y= x-7
200
What are the labels of my axes?
x: number of rides, y: dollars on card
200
What is the independent variable?
Time (hours after noon)
300
Add 6, then divide by 2 Inputs: 6, 8,10,4
Outputs: 6, 7, 8, 5
300
What is equation for this function?
Divide by 2, the add 4
y= x/2+4
300
What does P tell me about the situation?
On 7 rides she spent $27.50
300
What is the dependent variable
Dollars on card
400
What is the rule of this function?
Input Output
5 0
10 0
15 0
Multiply by 0
400
What is the equation for this function?
Inputs Outputs
3 9
6 36
5 25
y= x2
400
What is the lowest temperature of the graph?
50 degrees F
400
Describe what an independent and dependent variable is and what letter goes with each.
the independent variable (x) is the factor you change or control, while the dependent (y) variable is the factor you measure or observe to see if it changes in response to the independent variable.