ANSWER:
The slope is 1.5
STEP-BY-STEP EXPLANATION:
We can calculate the slope by means of the following formula:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Now, we replace by the values of the points (4,6) and (12, 18)
[tex]\begin{gathered} m=\frac{18-6}{12-4}=\frac{12}{8}=\frac{3}{2} \\ m=1.5 \end{gathered}[/tex]