Question
To answer each question, refer to the following basic graphs.(FIGURE CANNOT COPY)Which one is the graph of $f(x)=|x| ?$ On what open interval is it increasing?
Step 1
The absolute value function, $|x|$, gives the distance of $x$ from zero on the number line. Therefore, it is always non-negative. For $x \geq 0$, $|x| = x$ and for $x < 0$, $|x| = -x$. Show more…
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