$\"\"$

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The differential equation is $\"\"$ .

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Slope field is $\"\"$ .

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Let $\"\"$ .

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$ .

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At $\"\"$ , the slope field $\"\"$ .

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Observe the graphs:

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Graph (b) has slope field $\"\"$ at $\"\"$ .

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Therefore, the correct choice is graph (b).

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$\"\"$

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Graph (b).