Unit 3 Review

• Function
• Not a Function

Is this mapping a function or not a function? 

• Function
• Not a Function

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.

• 9

• 13

• 21

• -9

Which graph does NOT pass the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

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)

Does this describe a function?

• Function
• Not a Function

• 6

• -6

• 14

• -14

Write the equation.

• f(x) = -5x + 1
• f(x) = x + 5
• f(x) = -2x
• f(x) = -5x + 6

Write the equation.

• f(x) = 3x - 7
• f(x) = 3x - 1
• f(x) = 3x - 4
• f(x) = 2x + 3