One half to the eight power in fraction form​

Which explains whether or not the values in the table represent a direct variation? x 4 6 10 20 y 1 1.5 2.5 5 the table represents a direct variation because the values are proportional. the table represents a direct variation because the values are nonproportional. the table does not represent a direct variation because the values are proportional. the table does not represent a direct variation because the values are nonproportional.