Find the relation which is a function.
Answer to Problem 38STP
D is the correct option.
Explanation of Solution
Given:
The relation options are:
Concept Used:
To be a function, then for each member in the domain, there is only one member of range. We can also graph the points and use the vertical line test to confirm.
In Choice A: The points (4, 3) and (4, 2) have the same x − values but different y − values. Thus the relation in Choice A is not a function.
In Choice B, all four points have 3 as x − values but different y − values. Thus the relation in Choice B is not a function.
In Choice C, (− 2, 3) and (− 2, 1) have the same x − values but different y − values. Thus the relation in Choice C is not a function.
The relation In Choice D is a function because none of the x values are repeated. So, the correct choice is D.
Thus, the correct choice is D.
Chapter 3 Solutions
Algebra 1
Additional Math Textbook Solutions
College Algebra
College Algebra
Elementary Algebra
Linear Algebra and Its Applications (5th Edition)
College Algebra (7th Edition)
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education