Variable y varies directly with x^2, and y = 72 when x = 6.

Enter the constant of variation for the quadratic variation equation.

y = ____ x^2

Question

Variable y varies directly with x^2, and y = 72 when x = 6.
 
Enter the constant of variation for the quadratic variation equation.
 
y = ____  x^2

twizttiez · Answer

@MrNood

twizttiez · Answer

I think my answer is 2

mrnood · Answer

you are looking for an equation
y=kx^2

you know that y = 72 when x = 6

so write 
y=kx^2 using 72 for y, and 6 for x

twizttiez · Answer

y varies directly with x^2 

y= k x^2 , where k is any constant 

y=72; x=6 
72 = k(6)^2 
72 = 36 k 
k = 2 

The constant of variation is 2

Right?

mrnood · Answer

correct

twizttiez · Answer

Ok i have a question that i really 100% don't know what to do can you help?

twizttiez · Answer

Do you mind if i put it here or would you prefer i open a new ?