Relations and Functions

Which sets of ordered pairs represent functions?

• {(4,6) (5,7) (6,8) (7,9)}

• {(1,8) (2,8) (3,8) (4,8) (5,8)}

• {(2,4) (2,7) (6,4) (12,10) (15,5)}

• {(3,5) (3,9) (3,11) (3,15)}

   

This is an example of a FUNCTION because there are not ________ lines coming from the same domain value.

Which points make this relation not a function? Choose more than one.

• Point L

• Point N

• Point R

• Point T

• Point Z

Is this table a function or not a function? 

• Function
• Not a Function 

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

• D: {-4, -3, 1} R: {-4, 0, 1, 2}

• D:{-4, 0, 1, 2} R:{-4, -3, 1}

• D:{0, 1, 2, 3, 4} R:{-4, -3, 1}

Which relation has a domain of {3,7} and a range of {0,5} ?

• {(3,5), (3,7), (0,5), (0,3)}

• {(3,0), (7,0), (3,5), (7,5)}

• {(3,0), (3,5), (3,7), (7,5)}

• {(7,0), (5,7), (3,5), (7,5)}

What is the rate of change for the following graph?

• 80
• 20
• 40
• 160

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values
• No, because the vertical line test shows there are repeating input values

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.

The table below shows the lengths of the sides (s) and perimeters (P) of the three different hexagons. Based on the information in this table, what is the formula for finding the perimeter of each hexagon?

• P = s + 20
• P = s ÷ 6
• P = 6s
• P = s²