Determining Functions from Ordered Pairs

In an ordered pair the first number represents which axis?

• x

• y

Which number represents the second number in an ordered pair? 

• X

• Y

• T

• G

What is the rule?
What numbers complete this table?

• +12
  20 and 22

• x2
  16 and 20

• x7
  56 and 70

In what order to you follow ordered pairs?

• vertex first then y

• y first then x

• none of these

• x first then y

• Function
• Not a Function

The relationship shown below is ​ (a)   .

{(0,0), (1,2), (3,4), (3,5), (6,1)}

• not a function

• a function

Fill in each black to make each set of ordered pairs a function.

{(5, 1), (​ (a)   , 7), (1, 7)}

{(1, 7), (7, ​ (b)   ), (5, 7)}

{(7, 1), (5, 7), (​ (c)   , 7)}

• 7

• 5

• 1

Complete the list of ordered pairs so that they represent a function.

​{ (-4, -5), (-2, -3), (​ (a)   , 3), (6, 5), (8, 7) }

• -4

• 4

• 8

• -2

• 6

• Function
• Not a Function

What is meant by the ordered pair (7, 700) ?

• In 7 months, I made $700

• In 7 months, $700 was raised for the science fair

• In 700 months, $7 was made

• In 7 months, I made $200