Answer
axis of symmetry
Work Step by Step
The axis of symmetry is a line such that if there is a point on one side of the line then there will be another point if the point is reflected to the axis.
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 10 - Analytic Geometry - 10.2 The Parabola - 10.2 Assess Your Understanding - Page 646: 7
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