Question
Make a table listing ordered pairs for each function. Then sketch the graph and state the domain and range. Identify any intervals on which $f$ is increasing, decreasing, or constant.$$f(x)=\frac{2 x}{|x|}$$
Step 1
We can choose some values for $x$ and then calculate the corresponding $f(x)$ values. Let's choose $x = -2, -1, 1, 2$. \[ \begin{array}{|c|c|} \hline x & f(x) \\ \hline -2 & -2 \\ -1 & -2 \\ 1 & 2 \\ 2 & 2 \\ \hline \end{array} \] Show more…
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