Question

Can someone please help me with the problem on logarithms??

1. What transformation has changed the parent function f(x) = log3x (3x is the base) to its new appearance shown in the graph below?

Answer 1

\[\log_{3x} \]

Answer 2

i really doubt \(3x\) is the base
i bet \(3\) is the base as in
\[\large \log_3(x)\]

Answer 3

looks like the graph has moved to the left \(4\) units, making it
\[\log_3(x+4)\] we can check that it is right

Answer 4

no I promise it's the base. hold on a second please, I'll screen shot it.

Answer 5

since \((-1,3) \) is on the graph, if we take
\[\log_3(x+4)\] and replace \(x\) by \9-1\) we get
\[\log_3(-1+4)=\log_3(3)=1\]so it is not right, we have to add \(2\) to make it \((-1,3)\)

Answer 6

your final answer should be
\[\log_3(x+4)+2\] should do it

Answer 7

Here is the whole question.

Answer 8

problem was typeset wrong

Answer 9

probably some cheesy scam system like connexus or flvs

Answer 10

in any case
\[\large \log_{3x}\] has no meaning
go with answer A

Answer 11

okay I'll let you know if you're right.

Answer 12

wondering where this problem comes from
let me know

Answer 13

Its on flvs.. Can you help me with one more before I turn in the quiz

Answer 14

since
\[\log_5(12)=1.54\] i would go with D

Answer 15

okay.

Answer 16

both your answers were correct @satellite73. Thanks for the help.