Identifying and Representing Functions

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 right 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 = 5 x - 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 

• Function 
• Not a Function

Is this a function? Explain.

• Yes; it passes the vertical line test.

• No; it does not pass the vertical line test

• No; it does not pass the vertical line test

A relation where every input in matches with exactly one output is called what?

• Relation

• Linear

• Exponential

• Function

Is this graph a function or not a function? 

• Function

• Not a Function

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values

• No, because the vertical line test shows there are repeating input values

Does this mapping diagram represent a function?

• No, because there are repeating input values

• Yes, because there are no repeating input values