The given points are readily observed to be the y- and x-intercepts, respectively. Thus, a good place to start is with intercept form.

**x/(-3) + y/(-6) = 1**(this is an equation for the line)**2x + y = -6**(multiply by -6 to get Standard Form)**y = -2x - 6**(subtract 2x to get slope-intercept form)