College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter 2 - Section 2.4 - Linear Equations - 2.4 Exercises - Page 212: 34


16 feet

Work Step by Step

We know that the pitch (the slope) is: $\displaystyle \frac{1}{4}$. If the vertical rise is $4$ feet, we can find the horizontal length: $slope=\frac{rise}{run}=\frac{4}{x}=\frac{1}{4}$ $\frac{4}{x}=\frac{1}{4}$ $4*4=x$ $x=16$ So the horizontal length must be 16 feet.
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