Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 5 - Linear Functions - 5-2 Direct Variation - Lesson Check - Page 304: 3


30 muffins

Work Step by Step

We will call x the cups of flower and y the number of muffins made. We first solve for k. Thus, we plug in the points and solve for k: $ y=kx \\\\ 12=(1)k \\\\ k=12$ We substitute k back in to get the equation: $y=12x$ We now plug in 2.5 cups to obtain: y=12(2.5)= 30 muffins.
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