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The piecewise-defined function is $\"\"$ .

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Find the value of the function at end points of each piece of the function.

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The function $\"\"$ .

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At $\"\"$ , $\"\"$ .

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The function $\"\"$ .

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At $\"\"$ , $\"\"$ .

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At $\"\"$ , $\"\"$ .

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The function $\"\"$ .

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At $\"\"$ , $\"\"$ .

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On the interval $\"\"$ , graph the function $\"\"$ .

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On the interval $\"\"$ , graph the function $\"\"$ .

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On the interval $\"\"$ , graph the function $\"\"$ .

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Plot the open circles at $\"\"$ and $\"\"$ .

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Plot the closed circle at $\"\"$ and $\"\"$ .

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Graph of the function $\"\"$ :

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$\"\"$

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Graph of the function $\"\"$ :

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$\"\"$ .