Functions and Not Functions Mappings

The mapping 

​ (a)  

 y as a function of x, because 

​ (b)  

• does not represent

• represents

• each x-value corresponds to more than one y-value

• each x-value corresponds to exactly one y-value

Tags

CCSS.8.F.A.1

​ (a)   ​

• Mapping does not represents y as a function of x.

• Mapping represent y as a function of x

Tags

CCSS.8.F.A.1

The mapping 

​ (a)  

 y as a function of x, because 

​ (b)  

• does not represent

• represents

• each x-value corresponds to more than one y-value

• each x-value corresponds to exactly one y-value

Tags

CCSS.8.F.A.1

Which of the following represent a function? (Pick 2)

• <(9,-7), (7,-5), (4,-2), (3, -8)>

• <(3,5), (4,6), (5,7), (4,8)>

• <(6,3), (4,9), (-2,-7), (-8,-5)>

• <(-2,0), (0,3), (4,5), (0,7)>

Tags

CCSS.8.F.A.1

Does this mapping represent a function?

• No, because two inputs map to 0

• No, because two inputs map to 1

• Yes, because 0 maps to 0 and 1 maps to 1

• No, because the inputs can result in more than one output

Tags

CCSS.8.F.A.1

Tell me about this table (choose 2):

• It represents a function

• It does NOT represent a function

• Because the x-values repeat

• Because the x-values do NOT repeat

Tags

CCSS.8.F.A.1

Tell me about this mapping (select 2):

• It represents a function

• It does NOT represent a function

• Because one input (4) results in two outputs (-5 & 0)

• Because two inputs (6 & -3) result in one output (4)

Tags

CCSS.8.F.A.1

Which set of coordinates represent a function? (Select all that apply)

• {(1,1), (2,2), (3,3), (4,4), (5,5)}

• {(1,5), (2,4), (3,3), (4,2), (5,1)}

• {(3,6), (4,7), (5,8), (6,9), (4,0)}

• {(-2,0), (0,-2), (3,-5), (-5,3), (10,-6), (-6, 10)}

Tags

CCSS.8.F.A.1

When deciding whether a relation represents a function.....

• x and y values cannot repeat

• x values cannot repeat

• y values cannot repeat

• x and y values can repeat

Tags

CCSS.8.F.A.1

Which of the following tables does NOT represent a function?

• 
• 
• 
• 

Tags

CCSS.8.F.A.1