Indentifying Functions Using Ordered Pairs and Graphs

Identifying Functions Using Ordered Pairs and Graphs

Multiple Choice

Is this table a function or not a function?

• Function

• Not a Function

Multiple Choice

Is this mapping a function or not a function?

• Function

• Not a Function

FUNCTIONS

EVERY INPUT (X-VALUE) MUST BE PAIRED WITH EXACTLY ONE OUTPUT (Y-VALUE)

IF A X-VALUE REPEATS IT MUST REPEAT WITH THE SAME Y-VALUE IT HAD WHEN YOU SAW IT THE FIRST TIME

Multiple Choice

Which set of ordered pairs is NOT a function?

• (1, 3), (2, 7), (3, 8), (4, 11)

• (2, 3), (4, 9), (3, 8), (4, 15)

• (1, 2), (3, 5), (6, 9), (7, 11)

• (-9, 4), (-6, 3), (-2, 8), (0, 21)

Multiple Choice

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

VERTICAL LINE TEST

The vertical line test is used to determine if a graph is a function or not.

If the verticle line hits the graph ONE time IT IS a function.

If the verticle line hits the graph TWO or MORE times it is NOT a function.

Multiple Choice

Does the graph show a function?

• Yes

• No

Multiple Choice

What is the test to determine if a graph represents a function?

• Horizontal line test

• Vertical line test

• Heidelberg Uncertainty Test

• Obi Wan Kenobi Test

Multiple Choice

Which of these aren NOT functions?

•  $They\ are\ both\ NOT\ functions$