Answer
makes sense
Work Step by Step
This statement makes sense because if $AC=0$, it represents a parabola; if $AC\gt0$, it represents an ellipse or circle; if $AC\lt0$, it represents a hyperbola.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 9 - Section 9.3 - The Parabola - Exercise Set - Page 999: 92
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