If the relationship is proportional, what is the missing value from the table?xy–39–5?–721

For a proportional relationship, the ratio y/x stays constant. The known pairs give 9 ÷ (−3) = −3 and 21 ÷ (−7) = −3. So when x = −5, y = (−3)(−5) = 15; the missing value is 15.

AI-written and checked against the verified answer.