In Exercises , find the (a) domain and (b) range.19. y = |x| - 2                 20. y = -2 + sqrt(1 - x)21. y = sqrt(16 - x2)           22. y = 3^2-x + 1

Intermediate Algebra
19th Edition
ISBN:9780998625720
Author:Lynn Marecek
Publisher:Lynn Marecek
Chapter8: Roots And Radicals
Section8.7: Use Radicals In Functions
Problem 407E: Explain why y=x3 is a function.
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In Exercises , find the (a) domain and (b) range.
19. y = |x| - 2                 20. y = -2 + sqrt(1 - x)
21. y = sqrt(16 - x2)           22. y = 3^2-x + 1

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