Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 5 Polynomials and Polynomial Functions - 5.2 Evaluate and Graph Polynomial Functions - 5.2 Exercises - Mixed Review - Page 344: 70


$x=-12$ $y=\frac{1}{4}x$

Work Step by Step

$x$ varies directly with $y$ $y=kx$ $y=\frac{0.2}{0.8}x$ $y=\frac{1}{4}x$ Determine x by substituting y in the variation equation: $y=\frac{1}{4}x$ $x=\frac{y}{\frac{1}{4}}$ $x=\frac{-3}{-\frac{1}{4}}$ $x=-12$
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