Functions Worksheet

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Functions Worksheet

Grade: grade8Date: 7/25/2026Problems: 10
1

If f(x) = 1x + 8, what is f(2)?

𝑓
A.10
B.1
C.29
D.11

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2

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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3

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

🔄
A.x + 1
B.11
C.19
D.20

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4

If f(x) = 5x + 4, what is f(6)?

𝑓
A.7
B.5
C.34
D.2

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5

If f(x) = 1x + 8, what is f(1)?

𝑓
A.9
B.2
C.25
D.16

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6

If f(x) = 4x + 8, what is f(9)?

𝑓
A.12
B.9
C.44
D.20

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7

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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8

If f(x) = 3x + 7, what is f(4)?

𝑓
A.19
B.2
C.20
D.13

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9

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

🔄
A.4x
B.12
C.21
D.19

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10

If f(x) = 3x + 7, what is f(10)?

𝑓
A.37
B.16
C.22
D.19

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