\"Slope\"\"

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Observe that x-coordinates of two points are same.

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Therefore the line is, vertical, and then the slope is undefined.

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Verify the solution:

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The slope formula is \"\".

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\"\"                         (Replace \"\" and \"\" with c, 5, c and \"\"2)

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

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\"\"                               (Apply Additive inverse property: \"\")                              

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Since denominator zero, it is undefined.\"\"

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The slope is undefined.