Is #y=8# a direct variation equation and if so, what is the constant of variation? Algebra Graphs of Linear Equations and Functions Direct Variation 1 Answer Alan P. May 5, 2016 #y=6# is not a direct variation equation; varying the value of #x# does not change the value of #y#. 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 1493 views around the world You can reuse this answer Creative Commons License