Intro to Functions Review

• Function
• Not a Function

The left oval represents your x values and the right oval represents your y values

• Yes

• No

Which set of ordered pairs 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)}

What is the definition of function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Does the mapping of these points represent a function? (Note: the left oval represents your x values and the right oval represents your y values)

• Function

• Not a Function

All of the x values are called what?

• Inputs

• Range

• Relation

• Function

All of the y values are called what?

• Domain

• Outputs

• Relation

• Function

Is relation shown a function?

• YES
• NO

Is this a function? Explain.

• Yes; it passes the horizontal line test.
• No; it is not a straight line.
• Yes; it passes the vertical line test.
• No; it does not pass the vertical line test

Is the relation a function?

• Function
• Not a Function