Unit 1 Extra Credit

What is the definition of function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Is this mapping a function or not a function? 

• Function
• Not a Function

All of the y values or outputs are called what?

• Domain
• Range
• Relation
• 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.

Is this graph a function or not a function? 

• Function
• Not a Function

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)

Given h(x) = 5 - 9x, find h(8). 

• h(8) = -360
• h(8) = -67

If f(x) = x - 5, what is the value of x when f(x) = 15?

• 20
• 10
• 5
• 0

f(x) = x+7 find f(4)

• 11

• 12

• 9

• 10

Is the sequence arithmetic: 37, 31, 25, 19, ...

• Yes
• No