SOLUTION: which of these equations is y a function of x? y=3xcubed, xy=1, ysquared=x, ycubed=8x

Algebra ->  Functions -> SOLUTION: which of these equations is y a function of x? y=3xcubed, xy=1, ysquared=x, ycubed=8x      Log On


   

Question 189565: which of these equations is y a function of x?
y=3xcubed, xy=1, ysquared=x, ycubed=8x
Answer by user_dude2008(1862) About Me  (Show Source):
You can put this solution on YOUR website!
y=3xcubed ----> yes
xy=1 => y=1/x ----> yes
ysquared=x => y = sqrt(x) or y=-sqrt(x) ----> no
ycubed=8x => y = cuberoot(8x) ---> yes