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4

Set 2: Linear Functions (Advanced)

Explanation

Answer: B

PROBLEM

If f(x) = ax + 2, and f(3) = 14, find a.

If f(x) = ax + 2, and f(3) = 14, find a.

A.

6

B.

4

✓ Correct
C.

2

D.

3

Detailed Explanation

Choice B is the best answer. 3a + 2 = 14. a = 4

Why others are wrong:
A: 6 is incorrect because it does not satisfy the equation.
C: 2 is incorrect because it does not satisfy the equation.
D: 3 is incorrect because it does not satisfy the equation.
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