$\"\"$

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The points are A $\"\"$ , B $\"\"$ .

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Slope formula is $\"\"$

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(Substitute $\"\"$ )

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$\"\"$

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$\"\"$ (Product of two same signs is positive)

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$\"\"$ (Add: $\"\"$ )

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$\"\"$ (Subtract: $\"\"$ )

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$\"\"$ (Divide: $\"\"$ ) $\"\"$

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The slope is $\"\"$ .