Answer
$x=-\frac{b}{a}$.
Work Step by Step
The x-intercept is when $y=0$, thus: $0=ax+b\\-b=ax\\x=-\frac{b}{a}$.
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 1 - 1.2 - Linear Equations in One Variable - 1.2 Exercises - Page 89: 83a
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