Row Matrix

Q.

Which of the following is a row matrix?

1. 

2. 

3. 

4. 

Q. $\frac{3x-4}{2}\ge \frac{x+1}{4}-1$, show graph of the solution on number line.

Q. For the following inequation, graph the solution set on real number line:
$x-1<3-x\le 5$