An ____ line which divides the graph into two ____ parts such that each side of the parabola is a reflection of the other side is called the _____. If the quadratic function is expressed into standard form y=a (x-h)²+k , the line ____ is the axis of symmetry.
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Answer:
The graph of a quadratic function is a parabola. The axis of symmetry of a parabola is a vertical line that divides the parabola into two congruent halves. The axis of symmetry always passes through the vertex of the parabola.