Question

The graph of a proportional relationship passes through the points (18,9)(18,9) and (6,y)(6,y). Find y

Answer 1

The answer to your question is Y= 3 because 18/3 = 6 and 9/3 = 3 so Y=3

Answer 2

Note that half of 18 is 9.  Thus, half of 6 is 3.  y = 3.