Hi

a) y = k*x and y=10 when x=5, k = 2   find y when x=15. 

b) y = k*x and y =5 1/4 when x=3,  find x when y=20  

c. if the constant of 'direct variation' is 3.75, find x when y=10. 

d) if y varies directly as x and the point (3,5) is on the graph of the equation describing the relation, find the equation of the variation 

   y = kx

   5 = k*3

   5/3 = k     is the equation of the Direct variation 

 

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