Which of the following equations does not represent a proportional relationship? y=2xy is equal to 2 x

y=12xy is equal to 1 half x

y=3x+4y is equal to 3 x plus 4

y=0.3x

-3.5 is the distance.

i've had this question so choose the one in the absolute value sign.

the linear relationship that represents a variation in direct proportion is the linear function that varies according to the numbers of its domain, for example the cost of producing x number of items can be represented in direct proportion by f (x) = mx + b, where m is the constant of proportionality, x the number of articles produced and b the fixed cost