Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 3 - 3.5 - Mathematical Modeling and Variation - 3.5 Exercises - Page 295: 37



Work Step by Step

As $x$ increases, $y$ increases too: $y=kx$ Now, choose any point. Let's use $(10,-7)$: $-7=k(10)$ $k=-\frac{7}{10}$ The variation model: $y=-\frac{7}{10}x$
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