Answer
A and C
Work Step by Step
Linear equations must be first-degree, and A and C are the only equations where x is raised to the first power. B is second-degree, and D contains x to the 1/2 power.
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Chapter 1 - Section 1.1 - Linear Equations in One Variable - 1.1 Exercises - Page 51: 7
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