rational equations

Question

suppose that y is directly proportional to x

 

find the constant of proportionality k if y=62.4 when x=13

k=

 

using the k from about write variation equation in terms of x

y=

 

using the k from about find y given that x=29

y=

Answer 1

y = kx ⇒

 

k = y/x = 62.4/13 = ?

 

Now plug the answer for k into

 

y = kx

 

and answer the second and third parts of your question.