Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 5 - Linear Functions - Concept Byte - Investigating y=mx+b - Page 305: 7


Changing the value of b will make the graph go up or down.

Work Step by Step

This is the case because b is the y-intercept of the graph. We prove this by thinking that at the y-intercept, the x-coordinate is 0, so when we plug in zero into the equation: y=mx+b, we get y=b. Therefore, b is the y-intercept. Now changing b (aka. the y-intercept) will make the graph move vertically because that will change when the graph hits the y axis.
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.