Given: y varies directly as x. If y = 5 when x = 4, what is the value of y when x = 12? A) 9.6 B) 10 C) 12 D) 15

Respuesta :

the value of y will be 15

Answer:

D) 15

Step-by-step explanation:

We know the formula for direct variation is  

y=kx

Substituting y=5 and x=4 we can calculate k


5=k4


Divide each side by 4


5/4 =k


Now y= 5/4 x


If x =12


y =5/4*12

y = 15