Identify Functions from a Relation

.

• Function

• Not a Function

Which of the relations below is a function?

• <(p>{(2, 3), (3, 4), (5, 1), (2, 4)}

• <(p>{(2, 3), (3, 4), (6, 2), (7, 3)}

• <(p>{(2, 3), ( 3, 4), (6, 2), (3, 3)}

Is this table 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

List the ordered pairs

• (1,3), (2,6), (3,9), (4,12)

• (3,1), (6,2), (9,3), (12,4)

• Input and Output

• Output and Input

Given the relation A = {(5, 2), (7, 4), (9, 10), (x, 5)}. Which of the following values for x will make relation A a function?

• 7

• 9

• 4

The graph of a relation is shown below. Is the relation a function?

• Yes

• No

• Cannot be determined from a graph

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

• D: {1, -3, -4,}
  R: {0, 1, 2, -4}

• D:{0, 1, 2, -4}
  R:{1, -3, -4}

• D:{0, 1, 2, 3, 4}
  R:{1, -3, -4}

A relation where every input yields one and only one output is called what?

• Relation

• Linear

• Exponential

• Function

All of the x values or inputs are called what?

• Domain

• Range

• Relation

• Function