Consider the two graphs above. Which statement best describes the graphs?

A. Graph 1 represents a proportional relationship, but graph 2 does not.

B. Graph 2 represents a proportional relationship, but graph 1 does not.

C. Both graph 1 and graph 2 represent proportional relationships.

D. Neither graph 1 nor graph 2 represent a proportional relationship.

B. Graph 2 represents a proportional relationship, but graph 1 does not.

Step-by-step explanation:

All proportional relationships pass through the origin. Graph 2 does but Graph 1 does not. Additionaly, Graph 2 is a straight line that represents a proportional relationship. Another way to find out if it is proportional is to find the constant of proportionality by dividing the y by the x in different parts of the line. The numbers should all have the same constant of proportionality.

Examples (all found in Graph 2):

15/3 = 5

10/2 = 5

5/1 = 5

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1