\"\"\"\"\"\"

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Let A = (x1, y1).

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B(0, 5.5) is the midpoint of the segment \"\" and \"\". \ \

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The midpoint of the segment = \"\"

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Substitute the coordinate values  \"\"in the midpoint formula.

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\"\"\"\"

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Solve for x coordinates.

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\"\"

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\"\"                         (Product of two different signs is negative)

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\"\"                (Multiply each side by 2)

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\"\"                       (Cancel common terms)

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\"\"                           (Zero propduct property: \"\")\"\"

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According to addition property of equality: if a = b, then a + c = b + c.

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\"\"               (Add 3 to each side)

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

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\"\"                                 (Additive identity property: 0 + 3 = 3)

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\"\"

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Solve for x coordinates.

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\"\"

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\"\"            (Multiply each side by 2)

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\"\"                   (Cancel common terms)

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\"\"                        (Multiply: \"\")\"\"

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According to subtraction property of equality: if \"\", then \"\".

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\"\"              (Subtract 6 from each side)

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

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

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The midpoint point of A are \"\".