Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 6 - Trigonometric Functions - 6.6 Phase Shift; Sinusoidal Curve Fitting - 6.6 Assess Your Understanding - Page 427: 2



Work Step by Step

In this case the sine function looks like: $y=a\sin{(bx+c)}+d$, hence it has $4$ free parameters, therefore at least $4$ points are needed. This the statement is false.
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