Intro to Functions

Intro to Functions

by Mrs. Gaither

Multiple Choice

What is a function?

• A relation that maps every domain value to exactly one range value.

• A relation that maps every range value to exactly one domain value.

• Any set of ordered pairs.

• Any graph of x and y values.

Multiple Choice

What is the domain of this function?
{(0,2), (3,5), (5,8), (7, 11)}

• {2,5,8,11}
• {0,3,5,7}
• [0,7]
• [2,11]

Multiple Choice

Give the range of the set of ordered pairs: (2, 11), (9, -3), (7, 21), (-8, 6)

• {2, 9, 7, -8}

• {11, -3, 21, 6}

• -8 < x < 9

• -3 < y < 21

Multiple Select

What are 3 different ways to represent ordered pairs?

• Mapping

• Table

• Inequalities

• Graph

Multiple Choice

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)

Multiple Choice

You can identify a function from a graph by using the.....

• Horizontal Line Test
• Eye Test
• Vertical Line Test
• Diagonal Line Test

Multiple Choice

Does this relation represent a function?
(1,5), (1,6), (1,7), (1,8), (1,9)

• Yes
• No

Multiple Choice

Is this graph a function or not a function? 

• Function 
• Not a Function 

Multiple Choice

Is the following a function?

• YES

• NO

Multiple Choice

What is the domain of the table?

• -3, -2, -1, 0, 1

• -3, 5, -2, 2

• -7, -4, -1, 2, 5

• -7, -4, -3, -2, -1

Multiple Choice

Which table represents a function?

Multiple Choice

Is this graph a function or not a function? 

• Function
• Not a Function

Multiple Choice

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.

Multiple Choice

What is the range?

• {-3, -1, 2, 4}
• {0, 4, 7} 
• {0, 4, 4, 7}
• {7, 4, 0}

Multiple Choice

Is this graph a function or not a function? 

• Function 
• Not a Function

Multiple Choice

Which mapping diagram is not a function?

Multiple Choice

Is this mapping a function or not a function? 

• Function
• Not a Function