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What value would make the set of points a function?

(9, -2) (4, 3) ( 8, 10) ( ?, 8)

Select all possibilities.

• 9

• 2

• 4

• 5

• -2

Tags

8.F.A.1

Is this mapping 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 graph does NOT pass the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

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 set of ordered pairs a function and how can you tell?

• Yes its a function because no y values repeat
• No it's not a function because there are negative numbers
• No it isn't a function because an x value repeats but has different y values 
• No it isn't a function because an y value repeats but has different x values

Tags

CCSS.8.F.A.1

.

• Function
• Not a Function

Tags

CCSS.8.F.A.1

Look at this graph. Is the relation a function?

• yes

• no

A coach is ordering trophies for a team.

The coach pays a one-time fee of $15. The coach also pays $4 for each trophy.

Which function can be used to find c, the total amount the coach pays in dollars when t trophies are ordered?

• c = 4t + 15

• c = 4t - 15

• c = 15t + 4

• c = 15t - 4

Tags

CCSS.HSF-BF.A.1A

Carlos bought a video game. He made an initial payment of $75 to the store, and he will pay $5 each month until the game is paid off. Which equation represents the relationship between m, the number of monthly payments Carlos has made, and t, the total amount that Carlos has paid the store?

• t = 75m + 5

• t = 5m - 75

• t = 75m + 80

• t = 5m + 75

Tags

CCSS.HSF-BF.A.1A