Representation of Functions

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 

The output is one-third the input.

• 1/3x

• 3x

• y = 1/3x

• y = 3x

The output is eight less than three times the input.

• y = 3x - 8

• 3x - 8

• y = 8 - 3x

• 8 - 3x

If my function rule is x - 5, what is the OUTPUT if the input is 14?

• 9

• 19

• 21

• 1

Which gives the correct output for 11 and 15?

• 15
  19

• 7
  11

• 12
  16

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

• mapping diagram

• table 

• function

• function notation 

Evaluate the function rule: 
 y = 5 x - 2    for x = 3 

• y = 13 

• y = 12 

• y = 11.5 

• y = 17 

The following image is representing

• vertical line test

• mapping

• non-linear function

• function table

The following image is an example of

• vertical line test

• mapping

• non-linear function

• function table

The following image is an example of a

• linear function

• non-linear function