Functions Worksheet

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Functions Worksheet

Grade: grade8Date: 4/26/2026Problems: 10
1

If f(x) = 2x + 3, what is f(5)?

𝑓
A.22
B.13
C.4
D.11

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2

If input 1 → output -1, input 2 → output 0, what is the function rule?

🔄
A.x - 2
B.29
C.8
D.19

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3

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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4

If f(x) = 4x + 1, what is f(6)?

𝑓
A.25
B.17
C.4
D.22

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5

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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6

If f(x) = 4x + 1, what is f(3)?

𝑓
A.12
B.10
C.21
D.13

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7

If f(x) = 4x + 1, what is f(10)?

𝑓
A.15
B.8
C.23
D.41

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8

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

𝑓
A.13
B.16
C.14
D.7

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9

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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10

If f(x) = 3x + 5, what is f(10)?

𝑓
A.27
B.35
C.10
D.16

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