Functions Test

True or False: The mapping diagram above is an example of a function.

• True

• False

True or False: The set of ordered pair above is an example of a function.

• True

• False

What are the ordered pairs that are on this graph?

• {(0,-3),(1,-2),(-2,-3),(4,1),(3,-1)}

• {(0,-3),(-2,1),(-2,3),(1,4),(3,1)}

• {(-3,0),(-2,1),(3,-2),(1,4),(3,-1)}

• {(-3,0),(1,-2),(3,2),(4,1),(3,1)}

What is the domain of the relation shown in the graph above?

• {0, 1, 2, -2, 3}
• {1, 3, 0, -2, -5}
• {0, 2, -1, 3, 5}
• {-5, -2, 2,-1, 3}

Which of the following relations represents y as a function of x?
I. {(1, 4), (2, 5), (3, 6)}
II. {(1, 4), (2, 4), (3, 4)}
III. {(1, 4), (2, 4), (1, 3)}
IV. {(1, 4), (1, 2), (1, 3)}

• I, II, and III only
• II and IV only
• III and IV only
• I and II only

Does this mapping represent a function? Why or why not?

• Yes, this is a function because all the x values are different.
• No, this is not a function because not all the x values are different.
• Yes, this is a function because all the y values are different.
• No, this is not a function because not all the y values are different. 

Which of the graphs shown is a function?

• F
• G
• H
• J

Find the range of f(x) = 7x - 2, given the domain is D = {2, -1, 3}. 

• {-7, 14, 21}
• {-9, 12, 19}
• {-5, 12, 21}
• {-9, 14, 19}

Which equation accurately represents the table?

• y=3x+1

• y=4x-2

• y=x+1

• y=x+7

Which equation matches the table?

• y = 3x + 9
• y = x + 9 
• y = x + 3
• y = 12x - 3