Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Section 1.4 - Linear Functions and Slope - Exercise Set - Page 213: 59

Answer

a) $y=-3x+5$ b) $m=-3$, $b=5$ c) See below

Work Step by Step

(a) Rearrange the equation in the standard slope-intercept form of $y=mx+c$ by solving the equation for y. For this, bring all the variables other than y and constant terms to one side. $\begin{align} & 3x+y-5=0 \\ & y=-3x+5 \end{align}$ (b) From (a) above, the slope-intercept form of the equation is $y=-3x+5$. Compare the given equation with the standard slope-intercept form of the equation, $y=mx+c$ where m is slope and c is the y-intercept of the equation. The value obtained will be $m=-3$ and $c=5$. Hence, the slope of equation is $-3$ and the y-intercept is $5$. Part (c) is given below:
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