Well, as the points are colinear, the slope of the line is always the same, 1/2.
But we can also find that from the graph:
[tex]\begin{gathered} m=\frac{\Delta y}{\Delta x} \\ m=\frac{3}{6} \\ m=\frac{1}{2}\text{ (in the simplest form)} \end{gathered}[/tex]
Answer: 1/2
