Answer
$y=\dfrac{1}{2}x+6$
Work Step by Step
Using $y=mx+b$ (where $m$ is the slope and $(0, b)$ is the $y$-intercept) or the Slope-Intercept Form of linear equations, then the equation of the line, given that the slope is $\dfrac{1}{2}$ and the $y$-intercept is $(0, 6),$ is
\begin{array}{l}\require{cancel}
y=\dfrac{1}{2}x+6
\end{array}