help please.!!
answer choices:
[tex]({y}^{2}) ^{ - \frac{1}{2} }[/tex]
[tex](y^{\frac{8}{3} }) ^ { - \frac{1}{2} } [/tex]
[tex](y^{ \frac{2}{3} })^{ - \frac{1}{2} } [/tex]
​