Algebra Functions from Ordered Pairs

Does this graph represent a function?

• Yes

• No

Which value is NOT in the range of the function?

• 0

• 3

• 4

• 5

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

Do the ordered pairs below represent a relation, a function, both a relation and a function, or neither a relation nor a function?

(-3, 5), (3, -7), (7, -15), (9, -19)

• function only

• neither a relation nor a function

• both a relation and a function

• relation only

Answer explanation

All functions are relations

But not all relations are functions

Tags

CCSS.8.F.A.1

The table represents a function of x.

Which equation describes the function?

• y = -2x + 12

• y = -2x + 24

• y = 2x + 12

• y = 2x + 24

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Aki wants to buy a music player that costs $234 using only the money he earned from mowing lawns. The table shows the amount of money Aki earned as a function of the number of lawns he mowed. Based on the function shown in the table, what is the LEAST number of lawns Aki will have to mow to buy the music player?

• 22

• 29

• 30

• 31

Tags

CCSS.HSF.IF.A.2

Is this relation a function?

{(4, 5), (-3, 2), (5, 5), (2, -3)}

• Yes, because there is exactly one x-value for every y-value

• Yes, because there is exactly one y-value for every x-value

• No, because there is more than one x-value for some y-values

• No, because there is more than one y-value for every x-value

Tags

CCSS.8.F.A.1

Which set represents the range of the function

• {1, 5, 9}

• {-1, 0, 1, 3}

• {-3, -1, 0, 1, 3, 5, 9}

• {-3, 1, 5, 9}

Which ordered pair (x, y) makes the relation below a function?

• (-4, 0)

• (-2, 0)

• (2, 0)

• (4, 0)

Tags

CCSS.8.F.A.1

Which relation is also a function?

• 
• 
• 
• 

Tags

CCSS.8.F.A.1

Which inequality represents the range of the relation graphed?

• 
• 
• 
• 

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5