Intro-functions

Which mapping diagram represents the function {(5,10), (10,20), (15,30), (20,37), (25,37)}

• A

• B

• C

• D

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.

Is this graph a function or not a function? 

• Function
• Not a Function

Is this table a function or not a function? 

• Function
• Not a Function

• {1, 2, 3, 4, 5}

• {-1, 1, 2, 3}

• {1, 2, 3, 5}

• {1, 5}

Complete the table of values for the function y=2x

• y values are (10,6,0,-6,-10)

• y values are (-5,-3,0,3,5)

• y values are (-10,-6,0,6,10)

• y values are (-10,7,0,6,10)

What is the range?

• {-3, -1, 2, 4}
• {0, 4, 7} 
• {0, 4, 4, 7}
• {7, 4, 0}

Is this graph a function or not a function? 

• Function 
• Not a Function 

Find the slope of the line.

• Undefined
• 0
• 1
• -1

Find the slope of the line.

• Undefined
• 0
• 1
• -1