16Hit1600
AlgebraEasyEvaluating a decreasing linear function

Algebra practice question

The function h is defined by h(x) = 9 − 2x. What is the value of h(4)?

Answer: 1

h(4) = 9 − 2(4) = 9 − 8 = 1.

Common wrong answers

If you answered 7
7 is 9 − 2, forgetting to multiply the 2 by 4.
If you answered 17
17 is 9 + 8, adding 2(4) instead of subtracting it.
If you answered 28
28 is (9 − 2) × 4, subtracting before multiplying. Multiply 2 by 4 first: 9 − 8.

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