Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 1 - Linear Functions - 1.5 Finding Equations of Lines - 1.5 Exercises: 31

Answer

y=-$\frac{1}{2}$x+$\frac{19}{2}$

Work Step by Step

m=$\frac{y_2-y_1}{x_2-x_1}$ m=$\frac{-1-6}{21-7}$ m=$\frac{-7}{14}$ m=-$\frac{1}{2}$ y-y$_1$=m(x-x$_1$) y+1=-$\frac{1}{2}$(x-21) y=-$\frac{1}{2}$x+$\frac{21}{2}$-1 y=-$\frac{1}{2}$x+$\frac{19}{2}$
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