Domain of the Functions

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)

Give the domain and range. Tell if it is a function.

• D: {-4, -2, 0, 2}
  R: {-2, -2, 1, 1}
  Function

• D: {-4, -2, 0, 2}
  R: {-2, 1}
  Function

• D: {-4, -2, 0, 2}
  R: {-2, -2, 1, 1}
  Not a Function

• D: {-4, -2, 0, 2}
  R: {-2, 1}
  Not a Function

DOMAIN is found by reading the ends of a graph from ___ to ___.

• Right to left

• Left to right

• Bottom to top

• Top to bottom

What is the domain of the graph?

• 
• 
• 
• 

What is the domain of the graph?

• {-4, 0, 2, 4}

• {-5, -4, -3, -1}

• {-5, -4, -3, -1, 0, 2, 4}

• All real numbers

What is the domain of the graph?

• -3 ≤ x ≤ 3

• 3 ≤ x ≤ -3

• -2 ≤ x ≤ 10

• -3 ≤ x ≤ 10

What is the domain of the function?

• x = all real numbers

• -2 < x < 4

• -2 ≤ x ≤ 4

• -6 ≤ x ≤ 3

Identify the domain and range of the function.

• Domain: -6 ≤ x ≤ 2

  Range: -3 ≤ y ≤ 5

• Domain: All real number

  Range: -3 ≤ y ≤ 5

• Domain: All real numbers

  Range: -∞ < y ≤ 3

• Domain: All real numbers

  Range: 3 ≤ y < ∞

What is the domain of the following graph?

• (-∞,∞)

• (-∞,4]

• (-∞,3]

• [-2.5,4]

What are the domain and range of the parabola shown?

• Domain: x≥-4
  Range: all real numbers

• Domain: all real numbers
  Range: y <-4

• Domain: all real numbers
  Range: y ≥-4

• Domain: x < -1
  Range: all real numbers