Question

Which graph represents the function f(x)=log(3x−1)?

Answer 1

SOLUTION:

Case: Logarithmic graph

Method:

To plot the graph:

f(0)= log [3(0)-1]

f(0)= undefined

$\begin{gathered} f(\frac{2}{3})=log[3(\frac{2}{3})-1] \\ f(\frac{2}{3})=log(2-1) \\ f(\frac{2}{3})=log1 \\ f(\frac{2}{3})=0 \end{gathered}$

The graph, therefore: