understanding functions pre-test

What is a relation?

• a set of inputs and outputs

• a set of inputs

• Aset of outputs

• my Uncle Fred

What is a function?

• A unique relation where each output has one unique input

• A unique relation where each input has two unique output

• A unique relation where each input has one unique output

• My Uncle Fred's son

Which graph shows a function?

• 
• 
• 

Which graph is not a graph of a function?

• 
• 
• 

Which list of coordinate pairs shows a function?

• {(6,1),(4,2),(6,-3),(2,5)}

• {(5,8),(3,-2),(-2,5),(0,0)}

• {(-1,7),(2,8),(-3,2),(-1,6)}

What is the average rate of change between x= -4 and x= 0?

• 2

• 4

• 5

• 3

Describe the Domain Range, Where it is increasing and decreasing.

How do you find the x intercepts of a function?

• f(x)=0

  or

  Where the graph crosses the x intercept

• x=0

  or where the graph crosses the y intercept

• f(x)=0

  or where the graph crosses the (0,0)

How do you find the y intercepts of a function?

• f(x)=0

  or

  Where the graph crosses the x intercept

• x=0

  or where the graph crosses the y intercept

• f(x)=0

  or where the graph crosses the (0,0)