SOLUTION: Is the equation in direct variation? If not, explain why. If so, what is the constant of variation? 9x + 5y = 0

Algebra ->  Equations -> SOLUTION: Is the equation in direct variation? If not, explain why. If so, what is the constant of variation? 9x + 5y = 0      Log On


   

Question 929736:
Is the equation in direct variation? If not, explain why. If so, what is the constant of variation?
9x + 5y = 0
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

direct variation:y=kx
9x+%2B+5y+=+0 ...solve for y
+5y+=+0-9x
+y+=+-%289%2F5%29x => k=-%289%2F5%29 and the equation is in direct variation