Introduction to Relations

Relation is the matching of items from set A to set B. Relations can be represented by using the following, EXCEPT

• arrow diagram

• graph

• ordered pair

• chart

In the ordered pair (4,9), which number is the y-coordinate?

• 4

• 9

• neither

• both

The left grouping in a mapping is the...

• domain.

• range.

• y-axis.

• relation.

The right grouping in a mapping is the...

• domain.

• range.

• x-axis.

• coordinate system.

Which relation diagram represents a function?

• Z

• Y

• X

• W

Which relation shows a function?

• A

• B

• C

• D

Which relation shows a function?

• A

• B

• C

• D

• {-2, 3, 7}

• [-2, 3]

• {1, 2, 2, 3, 4}

• [1, 4]

• {1, 2, 3, 4, 5}

• {-1, 1, 2, 3}

• {1, 2, 3, 5}

• [1, 5]

What is the range of the table?

• {-4, 0, 1, 3}

• {-2, 0, 2, 3}

• {-4, -2, 0, 1, 2, 3}

• { (0, 0), (2, -4), (3, 3), (-2, 1) }