In the figure at the right, what is the dashed line called?
A. x-intercept
B. axis of symmetry
C. line of dashes
D. broken line
A. x-intercept
B. axis of symmetry
C. line of dashes
D. broken line
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B. Axis of symmetry
The axis of symmetry is the vertical line that goes through the vertex of a parabola so the left and right sides of the parabola are symmetric. To simplify, this line splits the graph of a quadratic equation into two mirror images.