SOLUTION: Does y vary directly with x in the equation, y=-5x and if so, what is the constant of variation?

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Question 670461: Does y vary directly with x in the equation, y=-5x and if so, what is the constant of variation?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
If y alpha x
then y=kx
K is the constant of variation.
compare with your equation
y=-5x
here k=-5