Functions Test 1

Which set of ordered pairs represents the relation shown in the graph?

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

Which mapping represents the relation {(-2, 4), (4, 2), (2, 4), -4, 2)}?

• A
• B
• C
• D

Which statement is true about the relation {(-2, 4), (4, 2), (2, 4), -4, 2)}?

• The relation is NOT a function because all the y-values are not different.
• The relation is NOT a function because all the x-values are not different.
• The relation is a function because the y-values are different.
• The relation is a function because all the x-values are different.

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

If f(x) = 3x - 7, find f(4).

• 0
• 5
• 14
• 19

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}

If g(x) = 2x² - 4, find g(-2)

• -8
• -12
• 4
• 0

 $g\left(x\right)=3x+4,\ find\ g\left(-3\right)$  

• 5

• 13

• -5

• -2

 $g\left(x\right)=-7x+4,\ find\ g\left(-2\right)$  

• -10

• 10

• -12

• 18