Functions and relations

Which choice also represents the relation shown in the sets below as correct ordered pairs?

• {(1,2),(2,4)}

• {(2,1),(4,2),(6,2)}

• {(1,2),(2,4),(2,6)}

• {(2,2),(2,4),(2,6)}

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Is the relation above a function?

• Yes, because it doesn’t show any repeating 𝑥 values in the domain.

• Yes, because every 𝑦 value in the range is different.

• No, because one 𝑥 value in the domain goes to multiple different 𝑦 values in the range.

• No, because there is an 𝑥 value in the domain that is equal to a 𝑦 value in the range.

Tags

CCSS.8.F.A.1

If 𝑓(𝑥)=2𝑥+4, which of the following domain values would cause 𝑓(𝑥)=10?

• x = 10

• x = 3

• x = 6

• x =5

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Tags

CCSS.HSF.IF.A.2

Do you think the graph below is or is not a function. Explain why you believe your answer is correct.

Which graph does NOT pass the vertical line test?

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

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

What is the domain?

• None of the answer choices

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What is the range?

• None of the answer choices

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What is the range of the graph?

• (-∞,∞)
• [-1,0]
• [-1,3]
• [3,∞)

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5