How do you determine the constant of variation for the direct variation given (0, 0), (3, 12), (9, 36)? Algebra Graphs of Linear Equations and Functions Direct Variation 1 Answer Konstantinos Michailidis Oct 2, 2015 See explanation Explanation: It is #k=(12-0)/(3-0)=4# hence the constant of variation is #4# Answer link Related questions What is Direct Variation? What does direct variation look like on a graph? What are examples of direct variation? How do you determine if a function is a direct variation when given a table? How do you write direct variation equations? What is the constant of proportionality "k"? Why is #y=2x-1# not a direct variation? How do you graph the direct variation equation #y=-\frac{1}{6}x#? What is the direct variation equation if y varies directly with x, and #y=7.5# when #x=2.5#? What is the direct variation equation if y varies directly with x, and #y=2# when #x=4#? See all questions in Direct Variation Impact of this question 4583 views around the world You can reuse this answer Creative Commons License