SAT Linear functions Practice Question 1 (Easy)

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Question bank / Linear functions

Math · AlgebraEasy

The function $f$ is defined by $f(x) = 3x - 5$ . What is the value of $f(4)$ ?

$2$

$7$

$12$

$17$

Show answer and explanation

Answer: B

Substitute 4 for $x$ : $f(4) = 3(4) - 5 = 12 - 5 = 7$ .

Choice D adds 5 instead of subtracting it.

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