Week 3 (8th)

Does this mapping diagram represent a function?

• No, because an input value goes to multiple output values
• Yes, because each input goes to one and only one output

What is the definition of a function?

• Has inputs and outputs

• Inputs have different outputs every time

• x-values and

  y-values

• Every input has only one output

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.
• Yes, because each x-value has only one y-value paired with it.
• No, because the x-value 11 has two y-values pair with it.
• No, because each x-value has only one y-value paired with it.

Which of the graphs are examples of functions?

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• 
• 
• 

Does the table represent a function?

• Yes

• No

Which set of ordered pairs is not a function? (select all that apply)

• {(9, 5), (10, 5), (-9, 5), (-10, -5)}

• {(3, 4), (4, -3), (7, 4), (-3, 4)}

• {(6, -5), (7, -3), (6, -1), (9, 1)}

• {(2, -2), (5, 9), (5, -7), (1, 4)}

How do you use the vertical line test?

• Draw vertical lines through your graph. If any of the vertical lines you draw intersects the graph more than once then the graph is not the graph of a function.

• Draw vertical lines through your graph. If any of the vertical lines you draw intersects the graph more than once, then it is a function.

Which of the following is a function?

• 
• 
• 
• 

The domain is also know as the input.

• True

• False

Range is also known as the output.

• True

• False