Question

q 43

Answer 1

First plot the points on a graph..

Answer 2

A direct variation has y/x=constant for all points (except origin, where 0/0 is undefined).

Answer 3

You had the correct answer. I was just explaining why, in case you were not sure.

Answer 4

Direct variation is a straight line that passes through the origin, which makes all x and y pairs proportional. This is not the case.
An example of a direct variation would be:
(1,3),(2,6),(5,15), (10,30), ...