Determine Whether the Relation Is a Function

Using Desmos and the vertical line test, determine whether each relation qualifies as a function or not a function:

• Relation A is a function. Relation B and C are not functions.

• Relation A and B are functions. Relation C is not a function.

• Relation B and C are functions. Relation A is not a function.

• Relation A and C are functions. Relation B is not a function.

A set of points of a relation is shown below with a missing value, k . 

Which of the following values of k would make the relation a function?

• k=8

• k=3

• k=7

• k=-5

Tags

CCSS.8.F.A.1

Which of the following two values of k would result in the relation qualifying as not a function?

• k=4

• k=9

• k=-7

• k=2

• k=3

Tags

CCSS.8.F.A.1

Which of the following two values of q would result in the relation qualifying as a function?

• q=5

• q=60

• q=35

• q=15

• q=-3

Tags

CCSS.8.F.A.1

Is this mapping a function or not a function? 

• Function

• Not a Function

Tags

CCSS.8.F.A.1

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.

Tags

CCSS.8.F.A.1

Is this graph a function or not a function? 

• Function

• Not a Function

Is this table a function or not a function? 

• Function

• Not a Function

Tags

CCSS.8.F.A.1

Is this graph a function or not a function? 

• Function

• Not a Function

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