Representing Functions

Is this a function? 

• Yes, because every input has exactly one output
• No, because -1 has more than one output 
• No, because 3 is in the input and the output 

Tags

CCSS.HSF.IF.A.1

What is a rule that assigns exactly one output to ever input? 

• mapping diagram
• table 
• function
• function notation 

Is this a function? 

• Yes, because 15 is assigned the output value of 7 and 9
• No, because 15 has more than one output 
• No, because -1, 0, and 15 have the same output value of 9 

Is the table on the left a function? 

• Yes, because every input has exactly one output
• No, because 1 and 3 have the same output value 

Is the table on the left a function?

• No, because not every input has exactly one outout

• Yes, because every input has exactly one output

• No, because 4 has more than one output

Evaluate the function rule:

y = 5x - 2 for x = 3

• y = 13

• y = 12

• y = 11.5

• y = 17

Evaluate the function rule: 
y = 6(x - 6)  for x = 7 

• y = 36 
• y = 6 
• y = 1 
• y = 7 

find the range of the function when the domain is { -3, 0 , 3 }

t = 2s

• range : { -6 , 0 , 6 }

• range : { 12 , 1 , - 12 }

• range : { 10 , 11 , 12 }

What is the independent variable of a  function? 

• the input 
• the output 
• the function notation 

What is the dependent variable of a function? 

• the input 
• the output 
• the function notation