Respuesta :

quasarJose

Answer:

y  =  [tex]\frac{4}{9}[/tex]x

Step-by-step explanation:

Given parameters:

  y  = 4

   x  = 9

y varies directly as x ;

  Mathematically ;

            y ∝ x

So;

            y  = kx

k is the constant of proportionality;

  find k;

             k  = [tex]\frac{y}{x}[/tex]  

             k  = [tex]\frac{4}{9}[/tex]  

So,

  Equation of the relationship is;

            y  =  [tex]\frac{4}{9}[/tex]x
Yeah I think her answer was correct