SOLUTION: Can you help me find the variation constant and an equation of variation when y varies directly as x and y = 70 when x = 7 Thank you

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Question 423855: Can you help me find the variation constant and an equation of variation when y varies directly as x and y = 70 when x = 7
Thank you
Found 2 solutions by ewatrrr, shree840:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

finding the variation constant and an equation of variation when 'y varies directly as x' 

and y = 70 when x = 7 

  y = kx

 70 = k*7

 10 = k, the variation constant  

  y = 10x, the equation of variation

Answer by shree840(260) About Me  (Show Source):
You can put this solution on YOUR website!
You have two types of variation direct and indirect
direct variation y=kx y moves with a multiple of x
In your case y=70 x=7 so 70=k*7 or k=10 so if x=8 y-10*8