The equation of the line, in the point slope form, that has a slope "m" and passes through the point (a,b) is y-b = m*(x-a).
In your case it means that the equation is the equation of the line, in point slope form, that has a slope of 12 and passes through the point (-1, 14) is y-14 = 12*(x-(-1)), or, equivalently, y-14 = 12*(x+1). The last equation is in point slope form, as it is required by your condition. This equation is what you need and is your answer.