2 times the sum of 9 and 8 factored by x

What is the point-slope form of theequation for the line with a slope of-2 that passes through (1, 4)? a y + 1 = -2(x + 4)b y-1=-2(x-4)c y + 4 = -2(x + 1)d y - 4 = -2(x - 1)

Ineed if you could explain and give me the answer you! this needs done

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?