Functions and Range Definitions

• Function
• Not a Function

All of the y values or outputs are called what?

• Domain

• Range

• Relation

• Function

Is this graph a function or not a function? 

• Function

• Not a Function

Is this table a function or not a function? 

• Function

• Not a Function

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}

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)

• (3,4) (4,-3) (7,4) (3, 8)

• (6,-5) (7, -3) (8, -1) (9, 1)

• (2, -2) (5, 9) (5, -7) (1, 4)

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.

What is the range?

• x≥0

• y≥0

• All real numbers

• {0, 1, 2, 3, 4,...}

What is the domain of the graph?

• {x| -∞ ≤ x ≤ ∞}

• (-∞,∞)

• -3 ≤ x ≤ 3

• -15 ≤ y ≤ 9

Does the graph show a function?

• Yes

• No