Functions--relations, and evaluating

Let 𝑓(𝑥)=𝑥−7. Find the value of 𝑓(2).

• 5

• -7

• 7

• -5

Tags

CCSS.HSF.IF.A.2

Tags

CCSS.HSF.IF.A.2

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

Does this mapping diagram represent a function?

• No, because an input value goes to multiple output values

• Yes, because each input goes to one and only one output

Tags

CCSS.8.F.A.1

Tags

CCSS.HSF.IF.A.2

Tags

CCSS.HSF.IF.A.2

A set of ordered pairs is called what?

• Coordinates
• Relation
• Function
• Vertical Line Test

Tags

CCSS.8.F.A.1

A relation where every input yields one and only one output is called what?

• Relation
• Linear
• Exponential
• Function

Tags

CCSS.8.F.A.1

Is this set state as a relation: F={(16,-4), (9,3), (9, -3), (16, 4), (1, -1)}?

• Yes

• No

• Maybe

Tags

CCSS.8.F.A.1

The graph of a relation is shown. Is this relation a function?

• Yes

• No

• Cannot be determined from a graph