the equation of a lne passing through the point (x1,y1) and having a slope of m is
y-y1=m(x-x1)
given point (12,-2) and slope is 1/6
y-(-2)=1/6(x-12)
y+2=1/6(x-12)
if want slope intercept or standard form
y=1/6x is slope intercept
x-6y=0 is standard form