Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 3 - Section 3.3 - Graphing Linear Functions - Vocabulary, Readiness & Video Check - Page 149: 5


y, f(x), x

Work Step by Step

To find an x-intercept, we must find the value of x that is associated with a y-coordinate of 0. Therefore, we must set $y=f(x)=0$ (recall that f(x)=y, and is a way to say that y is a function of x). We then solve for x to find the x-intercept. Example: $y=f(x)=x+4$ $0=x+4$ Subtract 4 from both sides. $x=-4$, so the x-intercept is (-4,0).
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.