Unit 3 Test Review

Does this mapping diagram represent a function?

• No, because an input value goes to multiple output values
• Yes, because each input goes to one and only one output

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

• Function
• Not a Function

Is this table a function or not a function? 

• Function
• Not a Function

What is the domain of this linear function?

• all real numbers (ℝ)

What is the domain of the relation represented by the ordered pairs

{(-4,1), (-2,3), (0,5), (2,7), (4,9)}?

• {-4,-2,0,1,2,3,4,5,7,9}

• {1,3,5,7,9}

• {0,5}

• {-4,-2,0,2,4}

• f(-2) = -1

• f(-2) = -9

• f(-2) = 9

• f(-2) = 0

f(x)=4x+5
f(4)=

• 21
• -11
• -31
• 25

• 24

• -6

• 32

• 36

Is this function represented by the graph Linear or Nonlinear

• linear

• nonlinear