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The graph is a piecewise defined function.

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Observe the graph.

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A straight line exists in the interval $\"\"$ .

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The end points of the straight line are $\"\"$ and $\"\"$ .

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Standard form of line equation using the points $\"\"$ and $\"\"$ is $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in the line equation.

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$\"\"$

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The equation of the line is $\"\"$ in the interval $\"\"$ .

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Observe the graph.

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A straight line exists in the interval $\"\"$ .

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The end points of the straight line are $\"\"$ and $\"\"$ .

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Standard form of line equation using the points $\"\"$ and $\"\"$ is $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in the line equation.

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$\"\"$

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The equation of the line is $\"\"$ in the interval $\"\"$ .

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Then the piecewise function is $\"\"$ .

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The function is $\"\"$ .