Domain and Range

Domain and Range

Multiple Choice

What variable typically represents the domain?

• x

• y

Multiple Choice

What variable typically represents the range?

• x

• y

Discrete Function

The points are separated.

List the x-values

List the y-values

This is a continuous function.

Use inequalities to list domain and range.

Example 1:

Domain:__________

Range:___________

Multiple Choice

What is the RANGE of this graph?

• -7<x<5

• -7≤y<5

• -3<x<1

• -3≤y<1

Multiple Choice

What is the DOMAIN of this graph?

• -4 ≤ x ≤ 3

• -1 ≤ x ≤ 4

• 4 < x < 3

• -1 < x < 4

Ex. 2

Domain:___________

Range:___________

Multiple Choice

What is the range of the following graph?

• -5, -1,  0 , 1, 5
• -4, -2, 0, 3, 6
• (-4, 1)  ( 6, 0)
• (6, 0)

Finding Domain and Range with other representations.

Mapping

Table

List of ordered pairs

Multiple Choice

What is the domain?

• {5, 10, 15}

• {(5,2), (5,4), (10,6), (15,8)}

• {2, 4, 6, 8}

• {5, 2, 4, 10, 15}

Multiple Choice

What is the range of the mapping?

• {1, 2, 4}

• {0, 1, 2, 3}

• {0, 3}

• {1, 4}

Multiple Choice

Identify the domain of the following relation:
Remember domain is the "x" values

• -6, 14, 2, 28
• (-6,14), (0,32), (2,38), (4,44)
• -6, 0, 2, 4
• 14, 32, 38, 44

Multiple Choice

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: {-4, 0, 1, 2}
  R:{-4, -3, 1}
• D: {0, 1, 2, 3, 4}
  R:{1, -3, -4}
• D: {0, 1, 2, -4}
  R: {1, -3, -4, 1}

Function Notation

Find range of the function if the domain is {1, 3, 5}

Multiple Choice

Evaluate f(-2) if f(x) = x²+ 3.

• -1
• 1
• 7
• -7