Math Problem Statement

Look at this table:

x y –12 9 16 6 –6 17 7 0 15 9 19 7

Is this relation a function?

Solution

To determine whether a relation is a function, we need to check if each input (value of xx) is associated with exactly one output (value of yy).

Here’s the given table:

xxyy
-129
166
-617
70
159
197

Now let's check:

  • x=12x = -12 corresponds to y=9y = 9
  • x=16x = 16 corresponds to y=6y = 6
  • x=6x = -6 corresponds to y=17y = 17
  • x=7x = 7 corresponds to y=0y = 0
  • x=15x = 15 corresponds to y=9y = 9
  • x=19x = 19 corresponds to y=7y = 7

Each xx-value in the table is unique and is associated with only one yy-value. There are no repeated xx-values with different yy-values.

Conclusion: Yes, this relation is a function because each input has only one output.


Would you like a further explanation on how functions work, or do you have any other questions?

Here are some related questions:

  1. How do you determine if a graph represents a function?
  2. Can a function have more than one output for the same input?
  3. What is the difference between a relation and a function?
  4. How can you test a set of points to see if it's a function?
  5. What are some real-world examples of functions?

Tip: A simple way to check if a relation is a function is to ensure that no xx-value repeats with a different yy-value.

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Math Problem Analysis

Mathematical Concepts

Functions
Relations
Mapping

Formulas

None

Theorems

Vertical Line Test

Suitable Grade Level

Grades 7-9