Question

Which number line shows the solution to the inequality 9x - 4

Answer 1

We have the inequalty:

$9x-4<5$

We can isolate x:

$\begin{gathered} 9x-4<5 \\ 9x<5+4 \\ x<\frac{9}{9} \\ x<1 \end{gathered}$

So, the solution is the number less than 1 but not 1. In the number line this is represent by a empty circle (or white). In the options we have the representation is option B, all the number less than 1 but not 1.