Use the graph to answer the prompts below. y 10 9 8 7 6 5 4 3 2 1 X 0 1 2 3 4 5 6 7 8 9 10 Part A Determine whether the graph above represents a proportional relationship. Give two pieces of evidence that support your answer. Respond in the space provided. Part B when extended, does the ray pass through the point 18, 30? justify your answer respond in the square provided