<span>ax(d) = absolute value of the difference = ax(a-b). d(ax) = difference of the absolute value = ax(a) - ax(b). ax(a-b) = absolute value of (a - b). ax(a) - ax(b) = absolute value of (a) minus absolute value of (b).
The proportional relationship should require they y-intercept and is then 0 and the linear relationship should be in a straight line to be a linear! Hope this helps!
