3
If y varies directly as x, and y is 48 when x is 6, y = 8x can be used to find the value of y when x is 2.
If y = kx
48 = 6k
k = 48/6
k = 8
so y = 8x
when x = 2
y = 16
Added 2/25/2015 1:57:56 AM
This answer has been confirmed as correct and helpful.
Confirmed by
jeifunk [2/25/2015 3:35:55 AM]