Functions Worksheet

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Functions Worksheet

Grade: grade8Date: 6/10/2026Problems: 10
1

Do these pairs represent a function? (1→2, 2→4, 3→6)

A.Yes
B.No
C.Sometimes
D.Cannot determine

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2

If input 1 → output 2, input 2 → output 3, what is the function rule?

🔄
A.11
B.8
C.10
D.x + 1

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3

If f(x) = 4x + 8, what is f(10)?

𝑓
A.22
B.27
C.25
D.48

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4

If f(x) = 1x + 2, what is f(4)?

𝑓
A.6
B.13
C.22
D.24

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5

If f(x) = 1x + 3, what is f(10)?

𝑓
A.21
B.6
C.13
D.9

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6

Do these pairs represent a function? (1→2, 2→4, 3→6)

A.Yes
B.No
C.Sometimes
D.Cannot determine

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7

If f(x) = 3x + 9, what is f(10)?

𝑓
A.39
B.3
C.17
D.26

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8

Do these pairs represent a function? (1→2, 2→4, 3→6)

A.Yes
B.No
C.Sometimes
D.Cannot determine

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9

If f(x) = 1x + 6, what is f(5)?

𝑓
A.6
B.25
C.16
D.11

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10

If input 1 → output 4, input 2 → output 8, what is the function rule?

🔄
A.5
B.4x
C.15
D.30

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