## Algebra 2 (1st Edition)

Published by McDougal Littell

# Chapter 2 Linear Equations and Functions - 2.4 Write Equations of Lines - Problem Solving Workshop - Practice - Page 105: 6

#### Answer

$b=y_1-mx_1$

#### Work Step by Step

We know that if the slope of a line is $m$ and it contains $P_1(x_1,y_1)$, then its equation is: $y-y_1=m(x-x_1).$ The y-intercept is when $x=0$ and $y=b$, thus $b-y_1=m(0-x_1)\\b=y_1-mx_1$

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