Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 2 - Functions, Equations, and Graphs - 2-3 Linear Functions and Slope-Intercept Form - Practice and Problem-Solving Exercises - Page 79: 45

Answer

$y=-9x-6$
1497936651

Work Step by Step

You are given $2.4=-3.6x-0.4y$. To easily graph, you want to get $y$ all by itself on the left of the equals sign so that the equation will resemble $y=mx+b$. You can start to do this by adding $0.4y$ to both sides of the equation: $2.4+0.4y=-3.6x$. Next, subtract $2.4$ from both sides: $0.4y=-3.6x-2.4$. Now, Simply divide everything by $0.4$ to isolate $y$: $y=-9x-6$. Since your equation is now in $y=mx+b$ format, it will be easy to graph. Your y-intercept is $b=-6$. Your slope is $m =-9$ meaning your next point will be 9 down the y axis and 1 to the right along the x axis from the previous point.
Small 1497936651
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.