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Find f(x) if it is known that f(3k)=3k+7.
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Find f(x) if it is known that f(3k)=3k+7.

User Alexander Leyva Caro
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2 Answers

5 votes
f(3k)=3k +7   Equals    9k+7.  So 9k+7 would be the Answer.
User CryptoKitty
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2 votes

Since f(3k) = 3k+7 (Equation 1)

We have to determine the value of f(x).

That is we have to replace 3k by x,

3k = x

Substituting the value of 3k in equation 1.

So, f(x) = x + 7

Therefore, f(x)=x+7 is the required function.

User Peterevans
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7.4k points
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