Identifying Functions

• Yes

• No

Tags

CCSS.8.F.A.1

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

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 mapping a function or not a function?

• Function; the x's don't repeat

• Not a Function; the x's repeat

Tags

CCSS.8.F.A.1

Does the mapping of these points represent a function? (Note: the left oval represents your x values and the right oval represents your y values)

• Function

• Not a Function

Tags

CCSS.8.F.A.1

Function or not? (a)  

Domain = ​ (b)  

Range = ​ (c)  

• Function

• Not a Function

• {-3, 0, 2, 3}

• {-2, 2, 4}

• {0, 2, 3, 4, -3, -2}

Tags

CCSS.8.F.A.1

Function or not? (a)  

Domain =​ (b)  

Range = ​ (c)  

• Function

• Not a Function

• {1, 4}

• {-2, -1, 1, 2}

• {-2, -1, 1, 2, 4}

Tags

CCSS.8.F.A.1

Function or not? (a)  

Domain =​ (b)  

Range =​ (c)  

• Function

• Not a Function

• {-5, -2,  2}

• {-4, 1. 3}

Answer explanation

The relation is not a function because it assigns multiple outputs to at least one input. The domain is {-5, -2, 2} and the range is {-4, 1, 3}, confirming the correct choices.

Tags

CCSS.8.F.A.1

• Yes
• No

Tags

CCSS.8.F.A.1

Function or not? (a)  

Domain =​ (b)  

Range =​ (c)  

• Function

• Not a Function

• {-5, -2,  2}

• {-4, 1. 3}

Answer explanation

The relation is not a function because it assigns multiple outputs to at least one input. The domain is {-5, -2, 2} and the range is {-4, 1, 3}, confirming the correct choices.

Tags

CCSS.8.F.A.1