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Math Question

The function \( f(x) \) is to be graphed on a coordinate plane.
\[
f(x)=\left\{\begin{array}{ll}
-x, & x<0 \\
1, & x \geq 0
\end{array}\right.
\]
At what point should an open circle be drawn?
\( (-1,0) \)
\( (0,0) \)
\( (0,1) \)
\( (1,0) \)

Solution

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