Respuesta :

y varies directly with x.
⇒ y = ky where k is a constant.

Given that x = 4 when y - 26,
26 = 4k
k = 6.5 

Therefore 
⇒ y = 6.5x

When y = 65,
65 = 6.5x
x = 10

Answer: x = 10

Otras preguntas