Respuesta :
Answer:
x = 12
Step-by-step explanation:
Proportional relationship means that [tex]\frac{y}{x}[/tex] = k(a constant)
Here, k = 12/8 = 3/2
So, the equation is [tex]\frac{y}{x}[/tex] = 3/2.
Plug in y = 18, and we get 18/x = 3/2.
18 = 3/2x
x = 12