Two parallel lines are graphed on a coordinate plane. how many of the lines could represent proportional relationships?

i believe that the answer is

b. y-1=-2(x-4)

hope this !

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.