Algebra-1

Question Analysis
This question tests the student's ability to determine the axis of symmetry using symmetric points on the parabola.

Key Concept Explanation
If two points and on the parabola have the same y-coordinate, they are symmetric points. The axis of symmetry is the vertical line that bisects the segment connecting these points, given by .

Step-by-step Solution
1. Identify the coordinates of the symmetric points:

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