Question

Can somebody please help me? I don't understand the lesson and how to work these problems out. Thank you!

Given the function ƒ(x ) = 3x - 14, find ƒ(3).



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Answer 1

@ParthKohli

Answer 2

\[\color{blue}{f(x) = 3x - 14}\]\[f(?) = 3? - 14\]\[f(\heartsuit ) = 3\heartsuit - 14\]\[f(1) = 3(1) - 14 = 3 - 14 = -11\]Remember: you just replace all \(x\)'s.

Answer 3

But what do you replace the x's with?

Answer 4

replace the "x" with 3, because f(3) is saying that now we know hat x is.

Answer 5

what*

Answer 6

Oh! Yeah, now that makes sense :) Thank you, @ccswims and @ParthKohli :)

Answer 7

No problem.

Answer 8

:) I wish I could give out 2 medals :) You were both helpful, I think I can do this lesson on my own now!