Find the following limit. If the limit goes to $$ \infty $$, write inf. If a limit goes to $$ -\infty $$, write - inf. $$ \lim _{x \rightarrow 4^{-}} \frac{x^{2}-4 x}{x^{2}-3 x-4} $$ Limit:

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Calculate the limit $$ \lim_{x\rightarrow 4^{-}} \frac{x^{2}-4x}{x^{2}-3x-4} $$.
Evaluate the limit by following steps:
- step0: Evaluate using transformations:
  $$\lim _{x\rightarrow 4^{-}}\left(\frac{x^{2}-4x}{x^{2}-3x-4}\right)$$
- step1: Reduce the fraction:
  $$\lim _{x\rightarrow 4^{-}}\left(\frac{x}{x+1}\right)$$
- step2: Rewrite the expression:
  $$\frac{\lim _{x\rightarrow 4^{-}}\left(x\right)}{\lim _{x\rightarrow 4^{-}}\left(x+1\right)}$$
- step3: Evaluate:
  $$\frac{4}{\lim _{x\rightarrow 4^{-}}\left(x+1\right)}$$
- step4: Evaluate:
  $$\frac{4}{5}$$
The limit as $$ x $$ approaches 4 from the left is $$ \frac{4}{5} $$ or 0.8.
The limit is $$ \frac{4}{5} $$ or 0.8.

Find the following limit. If the limit goes to , write inf. If a limit goes to , write - inf.

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