Determine Whether It's a Function

Which set of ordered pairs 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)>

Tags

CCSS.8.F.A.1

How do you determine if a graph is a function?

• look at the y-values, if they repeat, it's not a function

• Use the "vertical line" test aka "pencil test"

• Look at you x-values, if they repeat it is a function

• Use the horizontal line test

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)

Tags

CCSS.8.F.A.1

• Function
• Not a Function

Tags

CCSS.8.F.A.1

Which of the following is a function?

• A

• B

• C

• D

Tags

CCSS.8.F.A.1

Which graph does NOT pass the vertical line test?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Which of these relations is a function?

• 
• 
• 
• 

Tags

CCSS.8.F.A.1

Which of the following tables does NOT represent a function?

• 
• 
• 
• 

Tags

CCSS.8.F.A.1

Which of the following represents a function?

• <(1,2), (1,3), (1,4), (1,5)>

• <(1,2), (2,3), (3,4), (4,5)>

• <(1,2), (3,4), (3,5), (6,7)>

• <(1,2), (3,4), (5,6), (5,8)>

Tags

CCSS.8.F.A.1

Which of the following mappings represents a function?

• 
• 
• 
• 

Tags

CCSS.8.F.A.1