Answer
$4$
Work Step by Step
Recall:
$\lim _{x\rightarrow a}p\left( x\right) =p\left( a\right)$
Thus,
$\lim _{x\rightarrow 2}\left( 3x-4\right) ^{2}
\\=\left( 3\times 2-4\right) ^{2}
\\=\left( 6-4\right) ^{2}
\\=2^2
\\=4$\frac{x}{y}