Functions: Practice 44

In this Grade 8 lesson on Functions, you will practice solving problems like: "If f(x) = 5x + 1, and f(x) = 21, what is x?". Work through each problem carefully, use the hints if you need help, and check your answers. This builds your understanding of functions step by step.

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If f(x) = 5x + 1, and f(x) = 21, what is x?

1Read the problem carefully: "If f(x) = 5x + 1, and f(x) = 21, what is x?"

Problem 1 of 5

1

Problem 1

If f(x) = 5x + 1, and f(x) = 21, what is x?

Problem 2 of 5

2

Problem 2

If f(x) = 5x + 4, and f(x) = 39, what is x?

Problem 3 of 5

3

Problem 3

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

Problem 4 of 5

4

Problem 4

If f(x) = 4x - 2, and f(x) = 30, what is x?

Problem 5 of 5

5

Problem 5

If f(x) = 6x + 5, what is f(8)?

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You got 0 of 5 right.

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Functions: Practice 44

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