Geometry

Question Analysis

This question pertains to coordinate geometry, specifically using the midpoint formula.

Key Concept Explanation

The midpoint formula for two points and is . Geometrically, the midpoint divides the line segment joining two points into two equal - length segments.

Step - by - Step Solution

1. Identify the coordinates of the endpoints: Let and .

2. Calculate the -coordinate of the midpoint:

Use the formula .

Substitute and :

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