If y varies directly as x, and y is 48 when x is 6, which expression can be used to find the value of y when x is 2?
y = StartFraction 48 Over 6 EndFraction (2)
y = StartFraction 6 Over 48 EndFraction (2)
y = StartFraction (48) (6) Over 2 EndFraction
y = StartFraction 2 Over (48) (6) EndFraction