Answer:
It is proportional if it is a straight line and if it goes through the origin (0,0). So the first one is proportional.
The second and third one are not proportional because it doesn't pass through the origin.
Step-by-step explanation:
I'm doing this topic in math class.
YOU SHOULD STOP TAKING PEOPLE'S POINTS AND NOT GIVING THE RIGHT ANSWER. STOP IT BECAUSE IF U DON'T THEN THEY WILL DO THE SAME TO YOU.
