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$f\left(x\right)\rightarrow f\left(x-a\right)$

The graph of $f\left(x\right)$ is shown above. Type +2 within the brackets above to make $f\bigl(x$+2$\bigl)$ and see what the graph looks like.

The graph of $f\left(x+2\right)$ is the graph of $f\left(x\right)$