write the equation of the line shown in point slope form (1,2) (3,6)

The point-slope form:
[tex]y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
We have the points (1, 2) and (3, 6). Substitute:
[tex]m=\dfrac{6-2}{3-1}=\dfrac{4}{2}=2\\\\\boxed{y-2=2(x-1)}[/tex]