Question

Which of these graphs shows a relationship that is NOT​ proportional?

Answer 1

It's B.

For the linear to be proportional, it would have to go through the y-axis. It will always have to go through the y-axis.

To sum it up:

You cannot find the slope if the line doesn't go through/start at the y-axis.

Answer 2

A

Explanation:

The line on graph A isnt touching any intercepting lines, therefore it isn't proportional.