Respuesta :

valleybritney

Answer:

y = 1.8

Step-by-step explanation:

y=kx

4=k(20)

k=[tex]\frac{1}{5}[/tex]

When x = 9:

[tex]y=\frac{1}{5} x=\frac{1}{5} (9)\\y=(\frac{9}{5}) = 1.8[/tex]