Answer
$$ y=\frac{1}{2}x-6.$$
Work Step by Step
We find the slope first as follows
$$m=\frac{y_2-y_1}{x_2-x_1}=\frac{-5-0}{2-12}=\frac{1}{2}.$$
We know that the point-slope form of a line is given as:
$y-y_1=m(x-x_1)$, where $m$ is the slope and $(x_1,y_1)$ is the point.
We plug in the given slope and point and solve for $y$:
$$y-0=\frac{1}{2}(x-12)\Longrightarrow y=\frac{1}{2}x-6.$$
