Algebra 1: Common Core (15th Edition)

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

Chapter 8 - Polynomials and Factoring - Common Core Cumulative Standards Review - Selected Response - Page 542: 23


The y-intercept is $5$

Work Step by Step

Line m passes through two points Point 1: $(-9,4)$ which is $(x_1,y_1)$ Point 2: $(9,6)$ which is $(x_2,y_2)$ We have the point-slope formula: $y-y_1=m(x-x_1)$ $m=\frac{y_2-y_1}{x_2-x_1}=\frac{6-4}{9-(-9)}=\frac{1}{9}$ Plug in the values: $y-y_1=m(x-x_1)$ $y-4=\frac{1}{9}(x-(-9))$ $y=\frac{1}{9}x+5$ The slope is $\frac{1}{9}$ The y-intercept is $5$
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